Pinterest Code: 119e79e8f3c084b84b2e03abae041ed4

Thermopro TP357

(134 customer reviews)

$12.99 $13.77

Availability: In stock

Bluetooth Digital Indoor Hygrometer Thermometer with App Alert

  • Comfort face indicators】: Humidity meter features comfort face icons to indicate DRY/COMFORT/WET air conditions in an easy to understand format and allow you to adjust your humidifier or dehumidifier accordingly;
  • 260ft/80m enhanced Bluetooth range】: Humidity sensor contains an enhanced Bluetooth Technology to produce a stable, ensure you’ll always have full home coverage to monitor the temperature and humidity within your home;
  • Highly accurate and fast refresh rate】: Indoor temperature and humidity monitor is highly accurate for both temperature and humidity (±1 Fahrenheit/Celsius and ±2%), with a lightning quick refresh rate of 2 seconds;
  • Smart App with alerts】: Set a temperature and humidity range via the ThermoPro Sensor and instantly receive a phone notification if the temp or humidity levels ever fall outside of your range;
  • Temperature graph and 1 year data storage】: Thermometer indoor outdoor displays an easy to use temperature graph with a maximum 1 year time period;
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Thermopro TP357 Bluetooth Indoor Hygrometer Thermometer Banner
ThermoPro TP357

ThermoPro TP357 Bluetooth Digital Indoor Hygrometer Thermometer

ThermoPro Bluetooth hygrometer indoor allows you to monitor your home environment from a distance of 260ft away while receiving tons of useful data directly to your smartphone. Via the APP you can set the suitable temp and humidity range for your baby room, greenhouse, humidor, cellar and instantly receive notifications on your phone once the temp or humidity levels go beyond the set range. Humidistat features face icon indicators to ensures you’re always aware of changes in your environment.

  • Temperature range: -4˚F to 140˚F (-20˚C to 60˚C) , Accuracy: ±1.0˚F (±0.5˚C)
  • Humidity range: 10%-99%, Accuracy: ±2% RH
  • Refresh rate: 10 seconds
  • Comfort indicator: DRY, COMFORT, WET
  • Wireless Bluetooth range: 260ft/80m
  • Magnet-mountable and wall-mounted design
  • App Monitor and Notification
  • Max/Min records within one year
Thermopro logo

ThermoPro home temperature monitor and greenhouse supplies are rigorously optimized to provide the most accurate results possible while still providing a simplified user experience.

Package:

  • 1* Room Temperature Monitor
  • 1* 3A battery
  • 1* User Manual
ThermoPro TP357 Bluetooth Hygrometer Thermometer Applications
High Accuracy and Fast Response

High Accuracy and Fast Response

The room thermometer for home contains a smart temperature sensor that provides high accuracy of ±1°F for temperature and ±2% for humidity. The wall thermometer indoor refreshes every 10 seconds to always keep you updated about the latest air condition changes.

Easy to Use Temperature Graph

Easy to Use Temperature Graph with 1 Year Historic Data

Easy-to-use temperature graph provides you the option to analyze your home’s historic temp and humidity data to look for trends and patterns. Select between multiple time periods such as 24 hours, 1 week, and even up to 1 year!

260ft/80m Bluetooth Coverage

260ft/80m Bluetooth Coverage

Monitor your humidity and temperature on your phone via the ThermoPro Sensor APP up to 260ft away using strong, reliable Bluetooth technology.

Smart APP Phone Notifications

Smart APP Phone Notifications

When the temp or humidity levels go beyond your set ranges, you will immediately receive a notification from the Thermopro Sensor APP to ensures you react quickly to the changes. Making this a must-have for humidor, greenhouse, terrariums, garage or wine cellars, and etc.

Portable with Two Mounting Choices

Portable with Two Mounting Choices

Portable humidor hygrometer has two mounting options – Magnetic Back / Hanging Hole, place the garage thermometer anywhere you wish such as living room, baby room, kitchen, greenhouse, guitar room, office and cellar.

Face Icon Comfort Level Indicator

Face Icon Comfort Level Indicator

Temperature gauge features a crystal clear LCD screen that displays comfort level face icons, which allows you to be aware of the changes in your home with just a quick glance, and if you need to take actions such as to humidify or dehumidify.

134 reviews for Thermopro TP357

  1. Eric

    How long does the battery last before having to replace the 3A?

    • CSTEAM (store manager)

      Hello,

      The TP357 should last approximately 6-8 months on a battery with full life.

  2. Fran Niermann

    Can the device monitor temperature in a vacation home from another state

    • CSTEAM (store manager)

      Hello,

      Unfortunately, this type of setup would not work because the device is locally synchronized with your phone and must remain within range to provide readings/information.

  3. Julia

    can the TO357 be paired with TX-4 (or TX-2) sensors? if so what is the max number of channels?

    • CSTEAM (store manager)

      Hello,

      The TP357 does not have any additional sensors to pair with it as it operates directly with your phone and the ThermoPro Sensor app.

      The ThermoPro Sensor app can support up to 10 units simultaneously.

  4. Barry Blackwell

    unit will not come on

    • CSTEAM (store manager)

      Hello,

      Please contact our service team at service@buythermopro.com for assistance with this issue.

  5. Antonio

    Can I calibrate humidity manually, if necessary, and adjust so it shows on the hygrometer?

    • CSTEAM (store manager)

      Hello,

      Unfortunately, you cannot manually adjust the readings on this device.

      The device should come calibrated and accurate.

      If you are experiencing inaccuracies please contact our service team at service@buythermopro.com for assistance.

  6. Vladislav

    how to export data from app “ThermoPro Sensor V2.1.9”

    • CSTEAM (store manager)

      Hello,

      It is not currently possible to export data from the ThermoPro Sensor app.

  7. Bonnie

    I would buy more products just because of the awesome customer service

  8. Jabiru

    Ok, this is a great thermometer that loads both real-time and historical temperature and humidity data into your phone and displays it graphically. I use it to monitor bedroom temps and attic temps . It’s great value for money. I wish there was a way to export the data to a spreadsheet to allow for more sophisticated data analysis, that would generate a 5 star rating.

  9. CM

    This is a Bluetooth Temperature and Hygrometer. It uses only one AAA battery so I was happy with that. The display is bright and easy to read. This uses it own app and I would have been happy if the Tuya app was used instead. I always cannot remember the name of the app to check the readings remotely. The Tuya app is popular and a lot of equipment uses the Tuya app nowadays. The sensor itself is very basic and would fit in any room. There are no wall attachments so this with have to sit on a flat surface. The readings are pretty accurate and the sensor displays the temperature and humidity in decimals. The pricing looks standard for all sensors that have similar functions. It would have been awesome if this sensor had homekit and smartthings support but then it would have to be WiFi enabled.

  10. Drucilla84

    This works with Bluetooth and as an app that as graphs it’s pretty cool

  11. Gilles G.

    Did the job very well at providing temp. history I needed to track (mother in nursing home).

  12. Grizzly

    I like the fact that the info is always available on demand. The tracking data gives you clear insight on the affect of humidity on the temperature variation. It allows me to see remotely when the basement dehumidier is full and needs emptying.

  13. Sumanth

    The values are sometimes little high even though the room is getting colder.

    The difference is in 1 or 2 degrees though, So it’s what you pay for !

  14. Robin

    Ez set up nice operation

  15. Tamra Eagle

    I thought it worked on Android but I guess it’s just iphone

  16. Dan

    These really work great. Bought 2. One used to monitor house temp and the other monitors temp in refrigerator. App monitors and keeps me informed of temps. Really impressed with these.

  17. Emily

    Used this for one of our guest rooms to make sure it was warm enough in there. We rent and can’t do much as far as insulating. Turns out there’s almost a 10 degree difference in this room, especially at night. This bluetooth thermostat made it possible for us to better regulate the temperature in that room.

  18. TheLastHousewife

    I have 4 of these to check food storage temperatures and they work great. The WiFi models would be better if you need to see the readings from a remote location, but they are a lot more expensive. Same company sells the WiFi ones, so I would imagine they are as good. Magnet holds them against metal walls inside coolers.

  19. CarefulPurchaser12

    It seems like a good product, but it is small (1.5″ X 2″) and the display is hard to read from more than 3 feet away. I can’t vouch for the accuracy. I have three different branded instruments like this that display temperature and relative humidity, and they all give slightly different readings. I like the magnet, it gives you some additional options for mounting.

  20. Tonia

    It works great

  21. Mary Ann Crowell

    Very easy to set up.

  22. Patrick B. Kenney

    Too small

  23. Parvez Kapadia

    Would buy again.

  24. Janie Lemos

    Checking humidity in home

  25. Juan Martinez

    Easy to read

  26. Vincent

    Thought it would be good for a sauna but died after 150°

  27. Robert L Guarnaccia

    Excellent for the price!

  28. Eric A. Sucar

    Simple, easy-to-use, minimal design. It’s the perfect thermometer for what I was looking for.

  29. mister

    Got it pretty fast and the size is very convenient!

  30. Jennifer Altenburg

    Great product for the money

  31. Julie Thomas

    It gives me the info. I want to know.

  32. Bill Ahrens

    Use it to monitor humidity in constant humidity chamber. Works great

  33. I empty

    X

  34. Bill H

    Setup instructions missed a step for pairing. Humidity reads consistently a little low.
    Overall it’s doing what I wanted.

  35. AdrianA

    Product works as advertised, connects to your phone via an app, which provides you the information you need to know.

  36. Charlotte

    Great Product

  37. Tommy Rigsby

    Works good

  38. Robert Font

    Temperature OK, humidity proves to read lower when compaired with other soures.
    Good value though.

  39. Vfer

    Great bslue

  40. AhmedAA

    They have good BT range. I think they are accurate. Easy to operate with the app.

  41. Susan Beaudet

    Ready to go and with a magnet on the back I was able to put it where I wanted to.

  42. Brandon Pell

    Excellent

  43. Sue

    This works as its supposed to.

  44. Gab Eusebio

    It is very easy to use and provides accurate data.

  45. Christopher Cordova

    I bought this for my office because the AC goes out at my work all the time.

  46. Flennoy Walker

    Great item

  47. CASSH

    These are great if you want to track temperature differences over a period. The Bluetooth works great. I can see when my a/c comes on and off. Pretty cool to see.

  48. Anna cuttone

    Small size and easy read oug

  49. Alan L Sorenson

    Works very well. Fast refresh time. Magnet allows you to stick it to a register with no problem. I use it to monitor the air temperature coming from my A/C.

  50. Arthur D Roby

    This item is important to me because it provides a instant room temperature measurement immediately.

  51. TOM BARSON

    Seems to work well. Provides a check on the dehumidifier in our basement – and I can check the device from my phone while upstairs.

  52. None

    Pretty cool. Don’t need to be able to see it cause the app is on your phone with bluetooth. Works great.

  53. Charlie30286

    Pretty accurate and loved that its magnetic

  54. cindy

    Good buy

  55. James

    Nice product. works as it should and App is good as well. not bad for the price.

  56. S String

    Simple setup it’s continuous monitoring of humidity and temp. Simple to see data for a day, a week even an entire year! All on my Android phone.

  57. Sam Fiery

    Display is a little small and hard to read.

  58. Jeff B.

    I bought the 2pack. These are very small and easy to place anywhere. I like the historical charts displayed on my phone. So much better that a single point in time reading.

  59. Cliff Anders

    The device does its job and is easy to operate. I haven’t heard it complain yet.

  60. CB Dancer

    Very easy to setup. Works well

  61. Austin Rodden

    Handy addition and eat setup

  62. Burgess

    Definitely a hot product. Makes other thermometers melt.

  63. Joan S

    The range is not as far as advertised.

  64. Daniel V.

    great to be able to read temp and humidity from remote location

  65. Michael F. Lehman

    Really like the app to keep track temp and humidity

  66. E. Solorzano

    Was not accurate

  67. Phillip T. Miksad

    Great little thermometer and humidity tool.

  68. FFF wise one

    Works through freezer door. Keeping tabs on beer freemen chamber.

  69. L A C

    I needed to replace a 25 year old indoor Thermpro. This new one has surpassed all my expectations. It has everything and more than I needed.

  70. J M

    Love being able to access humidity readings which are accurate

  71. KerryB

    Great little thermometer with magnet or place for tack. Easy to read! I really like it!

  72. Arnie Rice

    I have since bought one for my IT closet, gun safe & wine fridge for temp & humidity insights. Great products paired easily and reporting is good as well.

  73. Deb

    The app shows you the temperature and humidity throughout a certain period

  74. Zig

    Accurate and very helpful with the app. I will use this in my grow tent next spring.

  75. Danny Evans

    I like the magnetic back and how accurate it is. The Bluetooth app does pretty good too just wish it updated without being on the app

  76. Teresa Cooksey

    Batteries sent with thermometer didn’t work, probably because loose in box and magnet on units. Using for checking temps in various rooms to verify if adequate flow on A/C system. Large house with 7 people and different temperature need

  77. Kindle Customer

    I use it to track the temp. and humidity in my crawlspace. works great. Love the history of the readings by the ,day, month, and year.

  78. Beth Bailey

    I was getting ready to send it back but the issue was they sent it with a dead battery. It works perfectly with a new battery.

  79. Mary J. Catena

    I have one in every floor of my seasonal residence that way I can make sure the pipes don’t freeze when we are gone.

  80. thehillsofva

    It works and I love it! I can monitor important Temps for my animals without having to move. Now I can spend more time in bed! Haha

  81. PS

    It’s small so can be put anywhere out of sight. I put it in my attic and able to read the temp all through my 2000sq ft. house.
    The accompanying app is actually quite decent too and no issues so far.
    Was thinking of getting another one but price increased by 25% suddenly so going to hold off.

  82. JES

    Good BT distance. Accurate to a point as often graph and top banner temp/ humidity are off slightly . Otherwise a good unit for the money.

  83. Steven Katz

    I like that the unit is easy to setup, even the Bluetooth.
    And with the Bluetooth, I don’t have to be in the room to check the temperature

  84. Ben Lohrke

    When you set this up you have to download the thermal pro app on you iPhone 11 and the your up and it he has very good accuracy and it is easy to read.

  85. David Lawless

    These things are awesome..simple to setup, insanely accurate, works great with a really cool app. Get em! Very reasonable pricing

  86. Robin K.

    For the price, these are great. I have them to monitor Temps in my office and camper. Easy to read, seems accurate. Bluetooth to phone was a nice added feature!

  87. Lawrence Wachter

    Placed it above my old thermostat to see if I needed to worry about the humidity level in my house. It also provides a nice history graph of you are willing to install an app on your phone.

  88. Luke

    Seems well-built, seems accurate. Easy to register, easy to set up. The app is very useful, not bogged down with a bunch of nonsense. Though like someone else mentioned, it asks for your location to use, so clearly up to no good in the background… It’s reading temps 60 ft away from a well-house

  89. Mountains Bill

    I am using this to monitor a sick room. It is very effective. The App works fine with our Mac mini and Big Sur – M1 chip. I have just ordered a second one for another room. Thanks for a great product!

  90. keviiinl

    It does exactly what I wanted it to do. I can get a graph of temp/humidity graphed over a day/week/year.
    I use this to keep an eye on the humidity for my coffee plants and its been super helpful!

  91. Kindle Customer

    The picture of it next to the cell phone is VERY misleading. The thing is only about 2 inches tall and wide.

    I thought I would be able to mount this on the wall and read it from my bed – NOPE!

  92. butch cobren

    Theses things are great if u needing thermometers to check temps. Do woodworking and have unattached garage so nice to know temp from 75 feet away. Great little product. Liked it so much bought another and gonna get 2 more.

  93. Werking reviews

    Purchased for range only worked in a safe as long as I was within 1 to 2 feet of it. Home at absolute further diagonal is 50ft was hoping for at least 1/3 of the advertised range but only got about 1/200th of the advertised range.

  94. Mr. G

    The only downside is that the unit does not have a tiny backlight. Other than that, it is small, VERY accurate with temperature and humidity levels, and even interfaces with an Android app so that you can determine temp/humidity via your phone!

  95. RPH

    I set it next to my thermostat, another digital thermometer made by the same brand, and another digital food thermometer, let them all stabilize and they all read within 0.2 degrees of each other. So, while it it isn’t any sort of calibrated test, it seems to be accurate enough for my uses. The app is quick to update the current temperature but tends to take a little longer to update the historical temperatures, especially if you aren’t near the thermometer. All in all, I’d recommend it, we use it to monitor the temperature in our small child’s room without having to go in while she’s sleeping.

  96. Bill

    Very quick shipping and included battery. Easy to setup Bluetooth connectivity as long as you download the thermopro app. But that’s ok. It would not connect to the phone without the app. Tried three times. But it does a good job right out of the box. Good price value, accurate and easy to read.

  97. Retired_in_Seattle

    I use a humidifier during the winter, but I was never sure if I was over- or under-humidifying. This small, inexpensive device gives me the answer. It’s easy to read, with large clear numbers. I don’t have any way to gauge the accuracy of the hygrometer, but the temperature agrees with an old analogue thermometer I have. I’m very happy with the purchase.

  98. Joel R. Daniel

    Using 6 units commercially to monitor specific rooms/ areas.

    It has helped us resolve humidity and mildew issues.

    The app for reading works quite well for us. The units agree tightly in all readings. Battery life is very good.

    Thank you!

  99. Topazzi

    I make a sugar based product that requires humidity and temperature control for proper production. This digital hygrometer and thermometer has worked out very well in identifying the optimum conditions .

    I really like to be able to follow changes in humidity and temperature using the related app on my phone.

    This has been an excellent purchase and an excellent product. After using this product for a month I decided to buy another one!

  100. ROD SCHILTZ

    great quality. has nice little magnet on the back too. Doesn’t look like some dollar store piece of junk
    I have a basement that i was trying to control the humidity on. I got 3 of these to put in places so i could monitor that. Big enough to easily read and small enough to not be an eyesore

  101. Larry

    The thermometer works great, the software is excellent but it does not work in my application. I wanted to use it in my wellhouse, about 300′ from my house. Well, I have no WiFi that far from my house and therefore it does not work. It would work for a freezer in your garage, as long as you have WiFi.

  102. John DuRette

    If you have temperature and humidity controlled storage for your cigars, opening your cabinet up frequently isn’t good for stability. Since you can’t trust the decorative ‘hygrometer’ this let’s you keep an eye on things via Bluetooth. I’m using an external temp controller and relying on always-accurate Boveda packs with the goal of keeping my smokes at 70/70-ish.

  103. you rock

    I bought these to keep track of the temps for my chicks. I put one in each brooder and at each end when they were all together. I set up the alerts in the app so I would receive notifications when the temp went outside of the temperature range I set for my chicks. It gave me peace of mind that I could adjust the heat lamps if I received a notification. Great value for the cost!!

  104. Kelsey P.

    I tried every which way to get this to pair with my phone and it never worked. Functions well as just a regular digital thermometer which I got for an outdoor cat house, but if you’re getting it for the Bluetooth capability I’d keep searching.

  105. Y. R. Wu

    I could not get the app to connect to the thermometer (Galaxy Samsung S9) until I gave it permission to get my location (it clearly does not need my location and I consider it a privacy risk)

    After I allowed it to get my location and connected, I disabled the location for the app. Otherwise I’d give it 4 or 5 stars. Nice size to monitor the basement temp and really like having a history graph.

  106. Ray Smith

    Not accurate even to each other. They really shouldn’t sell them in pairs if they can’t read the same temperature in the same room touching each other after five minutes. If you have a temperature sensitive need, get something better. I’ll be returning these. Update: I returned the first set and went ahead and let them be replaced. The second set was at least within about a degree Fahrenheit of each other and will serve my purposes.

  107. DJayne

    I got two of these so I could compare temperatures in difference rooms more easily. The arrived just as a heat wave hit and I used them to monitor the temp in and out of the house so I could better adjust windows, fans, and blinds to keep the inside tolerable.

    Setup was super easy, readings update quickly, and the link to the phone is acceptable (not great, the range is okay but nothing to rave about).

    I like these well enough that I’ve ordered two more.

  108. hlsjca

    Nice set of Bluetooth temperature monitors. Has an app that you can install on your cellphone, which monitor the temperature and humidity over either 24 hours period, or weekly, or monthly. Read display is good as long as there is light in the room. Accuracy appears to be good. Fast delivery at very nice price. Replaceable AAA battery, supposedly last up to 6 months. Has a mount hole for hanging on wall, or just standing on flat surface, or attach to metal surface, as it have a magnet on back of unit.

  109. Tesseract

    This TP357 was surprisingly easy to set up and use. I have had it monitoring my attic for a couple of months. I have a two story home with an attic, and my iPhone connects to the ThermoPro from anywhere in the house. The battery life seems excellent, even though it uses only one AAA battery.

    While I have not compared its readings to any other device, its reports are consistent with how the attic feels on the rare occasions I am up there.

  110. Jim Collins

    I got the double set, one for my woodshop, and one for my store room where I keep my wood stock. I like to be able to keep an eye on the humidity in there.
    It’s also nice to know the temperature, especially in the shop. I can turn on the heater or AC, depending on the season, remotely so it’s ready when I am. I’m getting a third one for the kitchen, just because it’s good to know.
    The app is simple and straight forward.
    Good stuff. Would recommend.

  111. D. Harris

    Bought three of these, one for outside under a porch roof, one my study, and one more for special needs. Range is fair, not great, but I live in a very old house with lath walls and high ceilings. Overall, it’s very nice. Seems accurate to specs and the sensor readings are close and sometimes match.

    The graph reading on the app works well though I would display graphs differently if I were them: (1) clear the display, (2) add the current readings immediately, (3) add the graph readings as they come in and watch the graph build itself.

    Very good value for the price. I like the small size.

  112. Robert Alexander

    I ordered the 2 pack… I don’t have a fancy calibrated thermometer and hygrometer to use for checking accuracy, but the two units always read the same when in the same location, sometimes to the tenth of a degree. Humidity is less than 1% off of the other unit so that seems good too. The one in the guitar case reads what the Boveda packs in it are rated for as well. The Bluetooth is a bonus and the app is super easy and intuitive; if you can’t set these up on your phone without using a manual, you should probably swear off technology, it’s really that easy…. so far has been trouble free as well, doesn’t drop connection or anything.

  113. Mr. Denny

    We recently had our crawl space encapsulated including a commercial dehumidifier. I put the ThermoPro unit in that area (not that I wanted to go there to read the temp and rh%). But because the readout can be transmitted via bluetooth to my phone and iPad, I can conveniently get the status so I know if and when I need to change the dehumidifier setting. And if I do go into the crawlspace, the unit is displaying the information.
    For me, this is a great device for my needs.

  114. Mungo Jerry

    The temperature accuracy seems to be about right. I can only compare it to other thermometers I currently have, and they all are within a degree. It isn’t clear which one is the most accurate, but it is close enough for me. Connecting to bluetooth worked like it supposed to. Although I got a bit confused at first trying to connect through the bluetooth interface on my iPhone. You simply go to the ThermoPro app and connect from there. The range is actually less than advertised, but after all it is bluetooth which has well known ranges. It could be that in an open field the range really is 260 ft, but I get about 30 ft through a couple of walls. All in all I am happy with the purchase, I even ordered a second one. The second one was on sale as well.

  115. William

    I use this to monitor my hermit crabs. It uses low energy Bluetooth – not WiFi. Do not expect it to sync from a great distance. The sync can be a bit slow. Understand the limitations of the technology.

    I just like to know the mins and maxes for the tank overnight and afternoon. This works great for that when I am near the tank. I do wish there was a way to download the data. But I do not really need that feature in my application.

    The app includes alarm settings but they only work when the app is open and within rage to sync. That kind of defeats the purpose of the alarm. I’d like the alarm to trigger if I am in the next room and the temp drops below the alarm setting. I think this is another limit of low energy Bluetooth so I am not going to take a star away.

  116. Richard Davis

    You get a little box. With two littler boxes fit snugly inside. With two AAA batteries and a tiny instruction manual. You scan the QR code inside the front cover of the manual and download the app and open it. Put a battery in one of the sensors and the display tells the temp and rh with a little flashing bluetooth icon indicating it’s in pairing mode. On the app hit the + and boom there’s the sensor. Hit edit and rename it from the default to something more meaningful and you’re done. Put the other battery in the 2nd unit and hit the + on the app and boom there it is. Setup takes like less than a minute to do both sensors. I put them both together on a larger temp/rh unit that I have in my grow room. Once they reached their readings they all matched temp within 1°. The rh of both thermopro’s read within 1% of one another, but 4 to 5% below the big unit I had been using for a long time that has it’s own remote sensor. I also added that one’s remote sensor next to the other 3 and they all matched temp within 1° and the rh of that other brand remote unit was about 3 or 4 percent higher than the two new thermo-pros. I have 4 brand new big boveda packs that I can use to see what they all read in a sealed bucket with them. I’m hoping the two new thermopros turn out to be accurate with rh but at least they read the same so if they’re off from the boveda’s at least I’ll know by how much and can add the difference to my readings. As far as the bluetooth range, it’s working for me at least 30ft away through 2 plaster walls in a 120 year old house that was built very solidly.

  117. Adam

    I was looking for a digital hygrometer to put in my tupperdor since I was using one of those crummy analog ones. This fit my needs perfectly since it is small, I can read the numbers on it pretty easily, the battery appears to have good life and it has the temperature as well which is a nice bonus. What has been a surprise to me is how much I enjoy having the bluetooth app with it since I can just check the levels from my phone. The setup was extremely simple and I’ve had no issues with it connecting. It even has warnings that you can set if the humidity or temperature get too high or low. It does not have wifi so I can’t check it if I’m not home but I don’t get the allure to have that kind of access for a container of cigars. If I know the humidity is low but I’m not home I can’t fix it anyway!

  118. Menauhant

    I have a dehumidifier located in my crawl space and purchased this TP357 to monitor the humidity level. I placed the TP357 at a location as far away from the dehumidifier as possible. This remote reading application feature of the TP357 allows me the luxury of knowing the humidity level without having to climb into the crawl space and crawl around to read the TP357. It works great and absolutely does what it says it will do! One tip is not to search the iPhone APP Store for the TP357 APP. Inside the instruction pamphlet on the first page is a QR code for both an iPhone and an Android Operating System. Scan this and you will be taken to the correct APP to work with this device. Small size of TP357 does not matter because you are going to read the humidity level display on your phone. Magnet mount is also very handy.

  119. KJ

    Started with one of these, but once I saw that you could add to it on the app added 4 more. Best test of accuracy I could find is putting all 5 of these on the same table in the same room. All read very close to each other maybe off by a smidge, but this isn’t rocket surgery (lol). Found out some interesting things about my current aircon thermostat and temp/humidity in different rooms. I can see how these would be super useful for tweaking a new system or smart thermostat to balance out multiple rooms in the house. So far no problems with any of these 5 ThermoPro TP357 or the App that lets you keep track. Time will tell.

  120. RLEE

    I am placing these in my cigar humidors. Average temperature of 68 and average humidity of 66. To gauge the out of box accuracy, I placed them in my humidor next to my Acurite hygrometers. These have truly quick refresh rates, and will settle in to ambient readings in about 2 minutes. However, these ThermoPro hygrometers are still balancing out. 30m, and now they are within 3-4 points of the reference.

    How are these rated at 10s refresh? That would mean that they sample every 10 seconds and update their displayed values based on the growth/decay of the continuous readings. This is obviously done to ensure confidence in readings and prevent drastic fluctuations. However, this algorithm is slower than molasses in February! If I have to wait an hour to gauge true values, I’ve lost the flexibility that I thought I was getting.

    Will give it a day to see if I can accept this performance deficiency.

  121. Don N

    I set up the thermometer in our basement to monitor temperature and humidity. It transmits the data to my phone on the first floor of the house flawlessly. I am quite impressed with this inexpensive device and plan on ordering at least two more for use in other parts of the house.

    I have ordered and received to additional thermometers for other locations in the house. All went smoothly in the process…..no problems !

    Addendum: I now have five of these units and they all have experienced the same issue…..the batteries that come with it do not last. After replacing those batteries with fresh batteries, the units operate , the

  122. Drucilla84

    This works with Bluetooth and as an app that as graphs it’s pretty cool

  123. Mary Ann Crowell

    Very easy to set up.

  124. Eric A. Sucar

    Simple, easy-to-use, minimal design. It’s the perfect thermometer for what I was looking for.

  125. Jennifer Altenburg

    Great product for the money

  126. Sam Fiery

    Display is a little small and hard to read.

  127. Mountains Bill

    I am using this to monitor a sick room. It is very effective. The App works fine with our Mac mini and Big Sur – M1 chip. I have just ordered a second one for another room. Thanks for a great product!

  128. KerryB

    Great little thermometer with magnet or place for tack. Easy to read! I really like it!

  129. Teresa Cooksey

    Batteries sent with thermometer didn’t work, probably because loose in box and magnet on units. Using for checking temps in various rooms to verify if adequate flow on A/C system. Large house with 7 people and different temperature need

  130. Beth Bailey

    I was getting ready to send it back but the issue was they sent it with a dead battery. It works perfectly with a new battery.

  131. butch cobren

    Theses things are great if u needing thermometers to check temps. Do woodworking and have unattached garage so nice to know temp from 75 feet away. Great little product. Liked it so much bought another and gonna get 2 more.

  132. Topazzi

    I make a sugar based product that requires humidity and temperature control for proper production. This digital hygrometer and thermometer has worked out very well in identifying the optimum conditions .

    I really like to be able to follow changes in humidity and temperature using the related app on my phone.

    This has been an excellent purchase and an excellent product. After using this product for a month I decided to buy another one!

  133. John DuRette

    If you have temperature and humidity controlled storage for your cigars, opening your cabinet up frequently isn’t good for stability. Since you can’t trust the decorative ‘hygrometer’ this let’s you keep an eye on things via Bluetooth. I’m using an external temp controller and relying on always-accurate Boveda packs with the goal of keeping my smokes at 70/70-ish.

  134. hlsjca

    Nice set of Bluetooth temperature monitors. Has an app that you can install on your cellphone, which monitor the temperature and humidity over either 24 hours period, or weekly, or monthly. Read display is good as long as there is light in the room. Accuracy appears to be good. Fast delivery at very nice price. Replaceable AAA battery, supposedly last up to 6 months. Has a mount hole for hanging on wall, or just standing on flat surface, or attach to metal surface, as it have a magnet on back of unit.

  135. DJayne

    I got two of these so I could compare temperatures in difference rooms more easily. The arrived just as a heat wave hit and I used them to monitor the temp in and out of the house so I could better adjust windows, fans, and blinds to keep the inside tolerable.

    Setup was super easy, readings update quickly, and the link to the phone is acceptable (not great, the range is okay but nothing to rave about).

    I like these well enough that I’ve ordered two more.

  136. Mr. Denny

    We recently had our crawl space encapsulated including a commercial dehumidifier. I put the ThermoPro unit in that area (not that I wanted to go there to read the temp and rh%). But because the readout can be transmitted via bluetooth to my phone and iPad, I can conveniently get the status so I know if and when I need to change the dehumidifier setting. And if I do go into the crawlspace, the unit is displaying the information.
    For me, this is a great device for my needs.

  137. Mungo Jerry

    The temperature accuracy seems to be about right. I can only compare it to other thermometers I currently have, and they all are within a degree. It isn’t clear which one is the most accurate, but it is close enough for me. Connecting to bluetooth worked like it supposed to. Although I got a bit confused at first trying to connect through the bluetooth interface on my iPhone. You simply go to the ThermoPro app and connect from there. The range is actually less than advertised, but after all it is bluetooth which has well known ranges. It could be that in an open field the range really is 260 ft, but I get about 30 ft through a couple of walls. All in all I am happy with the purchase, I even ordered a second one. The second one was on sale as well.

  138. Adam G.

    I was looking for a digital hygrometer to put in my tupperdor since I was using one of those crummy analog ones. This fit my needs perfectly since it is small, I can read the numbers on it pretty easily, the battery appears to have good life and it has the temperature as well which is a nice bonus. What has been a surprise to me is how much I enjoy having the bluetooth app with it since I can just check the levels from my phone. The setup was extremely simple and I’ve had no issues with it connecting. It even has warnings that you can set if the humidity or temperature get too high or low. It does not have wifi so I can’t check it if I’m not home but I don’t get the allure to have that kind of access for a container of cigars. If I know the humidity is low but I’m not home I can’t fix it anyway!

  139. KJ

    Started with one of these, but once I saw that you could add to it on the app added 4 more. Best test of accuracy I could find is putting all 5 of these on the same table in the same room. All read very close to each other maybe off by a smidge, but this isn’t rocket surgery (lol). Found out some interesting things about my current aircon thermostat and temp/humidity in different rooms. I can see how these would be super useful for tweaking a new system or smart thermostat to balance out multiple rooms in the house. So far no problems with any of these 5 ThermoPro TP357 or the App that lets you keep track. Time will tell.

  140. Don N

    I set up the thermometer in our basement to monitor temperature and humidity. It transmits the data to my phone on the first floor of the house flawlessly. I am quite impressed with this inexpensive device and plan on ordering at least two more for use in other parts of the house.

    I have ordered and received to additional thermometers for other locations in the house. All went smoothly in the process…..no problems !

Only logged in customers who have purchased this product may leave a review.

SPECS

TP357 Specification

Temperature Range -22.0 to 140.0℉(-30.0 to 60.0℃)
Temperature Tolerance ±0.5℉(±0.3℃) from 32 to 140℉(0 to 60℃) otherwise ±0.9℉(±0.5℃)
Humidity Range 10%~99%
Humidity Tolerance ±2% form 30% to 80%,otherwise ±3%
Sensor Type NTC
Refresh Rate 10 seconds
Transmission Range* 260ft(80m)
Wireless Technology Bluetooth 5.0
Display LCD, 1 11⁄16  Length x  1 7⁄32 Width inches (43L x 31W mm)
Backlight N
Unit Size 2 3⁄16 Length x 2 1⁄8 Width x 11⁄16 Height inches (55.5L x 54.0W x 17.5H mm)
Power 1.5V (1xAAA Battery)
*The stated transmission range is based on tests at an ambient temperature of 77°F or 25°C without any obstructions or electromagnetic interference. Your range can vary depending on the number of obstructions and electromagnetic in your environment.

Product Comparison

 
 
Product Info
Thermopro TP357 Bluetooth Digital Indoor Hygrometer Thermometer

Thermopro TP357

ThermoPro TP49 Digital Indoor Hygrometer Thermometer Humidity

ThermoPro TP49

ThermoPro TP52 Digital Hygrometer Indoor Thermometer and Humidity Monitor Gallery

ThermoPro TP52

ThermoPro TP-55 Humidity and Temperature Monitor

ThermoPro TP55

Price $12.99 $13.77 $8.99 $9.53 $12.99 $13.77 $15.99 $16.95
Rating
Availability In stock In stock In stock In stock
Alexa capability No No No No
Backlight display No No Yes Yes
Barometric pressure No No No No
Bluetooth Yes No No No
Calibration feature No No No No
Comfort indicator Yes Yes Yes Yes
High low records Yes No Yes Yes
Indoor outdoor Indoor Only Indoor Only Indoor Only Indoor Only
Mobile app Yes No No No
Range 260ft - - -
Remote Yes No No No
Temperature humidity alerts Yes No No No
Weather forecast No No No No
Wifi capability No No No No

FAQ's

Q: What’s the difference between the TP357 and TP157?
A: The TP357 is a bluetooth model with uses out ThermoPro Sensor App.

Q: How many devices can I have paired to my phone?
A: You can have 10-20 sensors paired to your phone at a time.

Q: Why can’t I connect via Bluetooth?
A: Please make sure your app is completely up to date and enable GPS and location if you are an android user.

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