ThermoPro TP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor

I got one of these a few years back and have been very happy with it. It matched the humidity and temperature on an old taylor temp and humidity gauge. You can see that gauge in the background of the picture.

Well i’m moving and our new place has a finished lower level and i’ll be running a dehumidifier down there in the summer months to keep the humidity levels down so that we don’t get mold/mildew/musty odors. I want to be able to measure humidity at the far ends of that area and in the middle where i plan on placing the dehumidifier. So, i ordered two more. At around $10 each, i think these are a bargain.

My first thought when the two new ones arrived was to see how they compared – see the picture with this review. Humidity shown is 56, 55, and 57. Interestingly, my 2 year old one shows 56 which matches my old taylor. I am assuming that one of the new ones reads 1% rh higher and the other reads 1%rh lower. This is totally acceptable for this type of gauge for what i’m using it for.
I rarely use the temperature measurement but 74.7, 74.8, and 74.1 are all reasonable readings.

I’m so glad that i got the additional two gauges and they will be a big help in figuring out where to place my dehumidifier and what to set it at to assure my lower level is kept at a low enough humidity level to avoid any issues.

Update: i forgot to mention the humidity and temperature range feature. I think that this can be quite useful. Once you put the battery in and the unit starts, it will keep track of the lowest and highest reading for both humidity and temperature.
Now, let’s say that you forgot to turn your dehumidifier on in early summer – it might get as high as 70 or 80%rh. So you turn the dehumidifier on and it brings things down. You don’t care about that high reading any more, but you might want to see what sort of range running the dehumidifier is giving you. Just push the c/f setting button on the back and hold for 2 seconds – that will reset the high and low for both humidity and temperature – very handy feature! I saw one review that said that it couldn’t be re-set … I’m thinking that person didn’t read the owners manual. 😉 you could also re-set it by simply removing the battery and then putting it back in, but the 2 second button press is the way to go.

Aug30, 2022
i’m adding an update to this review – i ordered another gauge, you can see i like these. 😉 however i had a problem with it – it reads 4% lower than my other thermopro’s – see second picture – i marked that one with a small piece of green tape. I had this problem with one i ordered a few months back- returned it and reordered and the next one was ok.

And that said, i have had no problem at all having them last. Some reviewer have reported failures after a short time. Some of the ones i have are around 2 years old now.

Arrived in good condition. I really have little to say about it except that it works very well and is wonderfully inexpensive. I tested its heat readout against another probe thermometer and both were within 1 degree of each other, so it seems to be accurate. The digital display is easy to make out and the characters are noticeably crisp and readable. No blurry/fuzzy digital numbers here. The sharpness makes it easy to read even the smaller min/max numbers at a decent distance.

If you need an always-on hygrometer/thermometer on a budget, this is a no-brainer. I’ve been using it to track the heat/humidity of my indoor basil and lettuce plants growing under an led light. It’s a lot of peace of mind to be able to step into my grow space and get a good read of the temp/humidity at a quick glance and know if i need to make adjustments. If you’re doing a similar indoor project, do yourself a favor and get one of these.

Easily recommendable.

I have a basement woodworking shop, and there were days when it was uncomfortable working there. I didn’t think it got that hot (it is in a basement after all), so i thought it might be the combination of temperature and humidity. The unit works quickly, and i soon learned that the temperature was only 75 but the relative humidity was 70%, which is much too high. I purchased another dehumidifier for the shop, and conditions are much better. The unit is small and battery operated, so it is easy enough to move if you want to check another room. It also has a feature that lets you know both the high and low readings for the temperature and humidity for the past 24 hours and since the unit was put in service.

I bought this to find out just how humid my basement is. Now i know. But i have found so many uses for this thing. I move it around the house for all kinds of purposes. Currently it is getting used to make sure my sourdough bread is rising at the right temperature. So much easier to keep this nearby than to test the temp of the dough itself or guess.

I bought 2 last year. The literature said ‘inside only ‘. Trust me they don’t handle moisture. In picture the right one is my new one, the left, you can see only the temperature is all there. If you put it outside, cover it, have a waterproof box! I also like it because it goes to 58 below zero and i live in fairbanks, ak, i like to know how cold it really is! I really like that it has the high/low feature! Highly recommend it!

These work great to show both humidity and temperature. Very useful showing historical record of high and low temps and humidity over time. I just reset it by removing and replacing the battery and start my new history. I have in various rooms in my house and one in my car for camping without cell service or internet.

I recently purchased this unit due to being concerned with the effects of high humidity within our home. I purchased this particular unit primarily because of the high reviews it had received. I can attest that it deserves those reviews. This device quickly reacts to both humidity and temperature changes in the area within where it is placed. This in turn allows you to effectively evaluate your home’s problem areas and then work toward a solution, if needed. Simply, it works as advertised. Buy it!!!

This is your basic temperature sensor since it does not come with bluetooth or wifi connectivity. But if that’s what your looking for (i did as i don’t want to download another app) i recommend this one. It’s pretty accurate and easy to read. Time will tell how long it lasts but as of ~3 months it’s working great.

Been using this everyday for eight months with no issues. Haven’t had to change the battery or anything. Love the magnet. Sticks perfectly to our metal framing. Keeps me aware of humidity levels and temps and the historical highs and lows is a cool feature. Cannot say how it would hold up outdoors.

This unit is a ‘must-have’ for monitoring humidity especially in the high-humidity areas of your house. I have used it throughout the year and it provides an accurate reading of the humidity in my basement. I use it in conjunction with my midea de-humidifier and i cross-check the thermopro readings (in another area of the room) with the midea unit. Very accurate, very inexpensive / i highly recommend it.

Essentially, if a thermometer/hygrometer works and seems relatively accurate, i’m going to be satisfied. In addition to meeting that benchmark, this thermometer has all the features i was looking for: it measures both temperature (in either °c or °f) and humidity; keeps track of the highs and lows for both readings until you push a button to reset them; it’s compact and easy to read. The unit has a stand which folds out from the case and a magnet on the back if you want to attach it to a metal plate, refrigerator, etc. I would have preferred a hook or screwhole in place of the magnet…or in addition to…but i won’t take points off for that. It uses one aaa battery and has been working fine on a nimh rechargeable for the past 7 or 8 weeks.

The one flaw i’ve found is in regard to the magnet. It is mounted in a recess on the back of the unit, attached by an adhesive strip. I know that because, when i last removed the unit from the metal plate to which is was clinging, the thermometer came off but the magnet stayed behind. I could push them back together but i can see that before long i will have to use a stronger adhesive or the magnet’s going to be coming off on its own.

I’d still recommend this unit but be prepared to do a little handywork if you’re using the magnet.

This is a great tool to track temperature and humidity. It’s also a great value for the price.

Since summer 2022 has been a season of extreme temperatures, and since i’m sensitive to high heat and humidity, we need to track both throughout our home.

We already had three similar devices, but needed one more. This one looked good, and it’s actually far easier to read than others that had cost us more.

It worked right out of the box. We compared it with our other, similar devices, and all gave the exact same measurements, or were no more than a degree different from one another.

I especially like how light this device is, and how powerful the magnet is on the back of it. We’re using this one in the kitchen, on our freezer door. The device remains firmly attached, even with frequent opening and closing of the freezer and refrigerator doors. (well, in a heat wave, we’re drinking a lot of iced and carbonated beverages to stay cool.)

this is definitely a five-star item for how accurate it is, how easy it is to read, even in low-light conditions, and – of course – how affordable it is. If you need to check temperature or humidity (or both) in your home or workplace, or even outdoors on your porch, this device is ideal.

I have 4 of these and overall love them as they are accurate to themselves and other temp/humidity gauges so i trust their measurements but i’ve had issues with the lcd display on 2 of the 4 after less than a year of ownership. Some of the lcd lines that form the numbers no longer work so correct readings aren’t possible. So far it has just been on the small gauges that show minimums and maximum levels and not the large current temp and humidity read out.

Best feature is accurate, easy to read, and the min/max displays are very useful for tracking humidity in crawlspaces or gun safes or other less used spaces.

All three of the pictured items work equally well. The tp55 pictured on top has the larger display uses two aaa batteries where the two smaller ones both use a single aaa battery. These three devices are all mounted to my hvac return air vent in the basement and all have solid magnet mounts; as you can see in the photo all three of these devices provided temperature readings within 1 degree of each other and within .5 degrees of my mercury thermometer which read right around 71.5 degrees. The humidity had a little more variance, but at 3 degrees from the low end to the high end across three devices this is completely acceptable. Too early tell about about battery life but all of them have very clear dispays at eye level with hardly any light shining directly on them but viewing angle and ambient light has a detrimental effect on all three displays; the thermo-pro tp55 has the best display and with its blue backlight it would provide the clearest display in a bright enviornment at wider angles

I would like a product that measures inside and outside him in humidity as well as temperature yesterday the high and low for the day.

Easy to use and set up, hopefully it’s accurate but so far so good, and it comes with the battery you need.

It is nice and small so it hardly shows on my end table. It has very big numbers so that my older eyes can read it very easily.

Current readings with range good idea. Perfect shape, good quality and nice view. My only gripe is temperature reading should be on the top not at the bottom to take away the confusion.

The accuracy seems ok but it seems directional. I put this next to my plants that are out in the open next to a humidifier and it seems to only read where it’s sitting instead of the area. The area it is in is very open and seems is not humid enough. But i put the humidifier on all day.
Works for what i need. It’s just ok

Good inside temperature and humidity gauge.