ThermoPro TP53 Hygrometer Thermometer Humidity Gauge

Unit works as advertised. Verified RH at 100% and tracks other hygrometers I have within 2-5% which is reasonable (depending on your application). I would certainly buy this again.

First I checked this ThermoPro in the freezer, it was accurate to within 1 deg compared to my other digital thermometer. Encouraged by that good result I decided to check outside, the temp was 88 deg according to the online Weather Underground. As you can see from the accompanying pic they matched wonderfully. Incidentally the humidity according to the WU read 16%, and on the Thermopro you can see it reads 19%. So the humidity was less than stellar, but still pretty good for my purposes. I have to give this five stars considering the price. Good job ThermoPro!

I was camping this past week in the rocky mountains and thought that I really wanted to write a review about this product I have owned the thermopro hydrometer for about 2.5 years now to use in my RV. I stuck it to the wall by the bed so I can see the temperature and humidity at night/morning. It has seen temps down to -8 and highs up to 89. It is one of the most reliable items in my RV currently that takes batteries. I have never changed the batteries in it but yet it still works no matter the temperature. I don’t trust he humidity reading on it at all though. It swings all over the place in a matter of minutes and I have no idea why or how it pulls its reading. The light on I is awesome too for reading it when there isn’t any light.

Last year, I submitted a 5-star review of a similar unit — the ThermoPro TP52. I evaluated the TP52 by placing it next to a La Crosse Hygrometer/Thermometer that I used as a reference. The TP52 was remarkably consistent with the reference. Recently, I performed the same test with the TP53, using the same reference. For several days, the TP53 displayed humidity levels that were roughly 10 percent below the reference value (a difference of around 5 percent in humidity). I then moved the TP53 to the kitchen, attaching it to the refrigerator door. Over several hours, the displayed humidity increased, to a level that approximated what was displayed on the La Crosse unit (still in the next room). I subsequently moved the TP53 back to its original location next to the La Crosse unit. Over several days, the displayed readings have been fairly consistent, but seem to become less so at humidity levels above 48 percent. I think the original issue might have been due (at least in part) to the product slowly recovering from environmental extremes during storage, packaging or shipping. If you’ve purchased one of these, I recommend allowing a week or two for the unit to adjust to its environment. If the accuracy of my unit improves or degrades further, I’ll update the review.

Very accurate thermonater..
As you can see my inside one says (it has an outdoor sensor) says 81° with 91% humidity and the Thermapro says 81° 89% humidity..
its 2am here btw, Welcome to Florida Summer. Been here over 35 years, and I can tell you this.. The summers have gotten far hotter and the winter’s are nearly nonexistent… Our planet is definitely changing, idgaf what any of those politicians say.. whether its human error or just a naturally occurring shift, Its Happening… I have left Florida a few times for a couple years at a time but always end up back in my home town of Cocoa beach..
Ohh and yes.. Thermapro makes a fine product and would definitely recommend them

Building a humidor for a friend out of a high end fridge for wines (the compressors was broken), I decided to install this unit (the remote version would have been a better choice really) and test the open distilled water bath method of humidifying the fridge-a-dor. This unit helps with understanding the particular shelf level humidity of the unit’s performance. The better choice would have been to get a dual or quad sensor/remote combination and installed those sensors throughout the fridge-a-dor and been able to determine if circulation was needed (it is as I find out moving the sensor around on my own). Bottom line, great for general homogonized humidity sensor, but if in enclosed container you must then open and lose humidity to find out what the sensor says (and do it quickly).

I purchased both the TP 50 and the TP 53. They appear to be accurate, sometimes within one percentage or one degree, but if you wait long enough they both balance out. Exact accuracy is not important in a home situation, it’s not like I’m in a scientific lab. I do wish they would have a heat index reading as well… I have to constantly go to the chart I downloaded off the Internet to see just what the temperature “really” is when my cat and I are melting. But at least now I have some vague idea of how hot it really is in My unair-conditioned house, even though when I step outside it seems cooler, it actually is cooler in my house according to these thermometers. (The difference is due to air movement, there’s none in the house compared to outdoors)

The light is nice for night time when I want to know why I’m still sweating even with the fans on me.

Pros:
The ThermoPro is exactly what I needed. I’ts small yet has large numbers that are easy to see at a distance.
It is very accurate and responds quickly to changes in temp and humidity.
The light that I didnt think I would use is so bright I can tap it on when I come into the dark room as a quick night light.
The wide magnet on the back is very strong and ideal to hang the unit on a metal surface like file cabinet or refrigerator.
The record 24hr / alltime memory for highs and lows is handy mostly if you want to set it for 24hr and see what the high and low temps and humidity for the were.
The contoured cover makes the unit more appealing than those square box units.
The screw hole / flip base / magnet options are ideal for quickly moving from one location to another until you get around to buying a 2nd unit.

Cons:
Standing on the base makes the light button (at the bottom) hard to turn on without pushing the unit across the table top unless the back is up against something solid.
The magnet on the back is large and juts out an 8th of an inch or so that when you mount the unit to a wall with a screw the unit does not sit flat to the wall and if you loosen the wall screw to make the unit flat it tends to swing when you reach for the light button.
Removing the magnet gives access to the battery compartment and allows the unit to lay flush against the wall surface except when you push on the unit it presses the option buttons on the back so the unit changes from C to F.
I found that by putting a small rubber washer (the thickness of the magnet cover) over the screw let me put the unit tight and level to the wall without having the buttons being pressed and makes for ideal mounting.

Unlike most vendors, iTronics sent me a follow-up email asking if I found my purchase satisfactory. Which I did, so I don’t mind taking a few minutes to add a review of the unit.

Being that it is such a simple thing I was amused at how pleased I was with my purchase and I recommend this unit first to anyone who needs one.

If you are looking for a compact indoor temperature and humidity display, look no further. It smartly comes with batteries, which when inserted, the unit immediately works with NO additional setup. The display is easily readable and the readings appear accurate.

You cannot go wrong for the price!

The digits are large and very clear, and it is easy to turn on the light when needed. It has an unobtrusive stand that stays engaged. Nice to have the magnet option, which I don’t need. The high/low numbers are smaller, so they don’t distract from the current figures but are there if needed. A very nifty little thing.

The Good: Powered up nicely (after inserting batteries) right out of the box. Clear display with strong back light. I needed a quick glance display to monitor temperature in a NCC ( for a year my log entries just stated NCC temp as cool). Now I have a standalone temperature monitor I can glance at each day as I do my system checks.

The Bad: 1 minute after powering up display faded. LCD did not display all fields (number lines) and had ghost images. Let sit for 20 minutes with no changes. Back light continued to be bright so I didn’t suspect the batteries. Before writing a 1 star review I went out and bought a pack of AAA’s to verify.

Overall: After replacing the cheap batteries (who knows how long they were sitting in that box) the display came back clear and bold. Consider the cheap batteries a quick validation test to ensure the unit works then replace with more reliable batteries.

I used this in the desert this year to track current, 24 hour high and low temperatures, and humidity. It worked exactly as expected. despite the fact that it was stuck via the handy built-in magnetic mount to a shipping container. One does need to keep it out of the sun to get accurate readings, of course. Useful, works as advertised, and inexpensive – hits the trifecta, so it gets five stars. Would buy again.

I ordered two more to use in our new place in the Pacific Northwest. Solid reliable units.

My fault that I searched for indoor/ outdoor thermometer and this showed up and I bought it by mistake. That is on me. The one star is for a NO RETURNS policy for any reason? I changed my review because after complaining of no returns the vendor gave me a full refund and told me to just keep the item.

I was mostly interested in this for humidity control in my studio basement apartment. I used to go by how muggy it would feel when I got home from work & would turn the dehumidifier on, but then I’d get dry nose/mouth from leaving it on all night. Though, I have nothing to compare for accuracy, I have trained myself to check my ThermoPro a few hours after turning the dehumidifier on – if it’s close to 40%, I turn it off & have a great night’s sleep.

The unit is as wide as an iPhone 5, but shorter. I like that it has a magnet, cause I keep it on the fridge. The backlight button just needs a slight finger swipe, which I learned the hard way, cause I kept trying to push it like a TV remote & it’d fall off my fridge. Overall, it’s been very helpful for my needs.

Very easy set-up … insert batteries and its working. Allow it time to adjust itself to the current temperature and humidity. Well worth the price. My only question is this…how do I know it is accurate? I have another temperature/humidity gauge and they are quite different in their readings. Having said that the other gauge is an inexpensive thermometer/hygrometer and it is the reason I purchased this ThermoPro hoping that it would be more accurate.

Bought this to keep track of conditions at work received it today set it up and set on table at home working great. Air conditioner set at 70 the thermometer reads 70.3. Home weather station reads 57% this unit reads 57. Took outside and in 15 seconds went to 88F 68% expensive weather station the same, Accurate and inexpensive.