Reptile Thermometer 4-Pack Mini Digital Humidity Temperature Meters Gauge Indoor Hygrometer Thermometer AikTryee wiht ℉ for Humidors Greenhouse Garden Cellar Closet Guitar Case

Able to see humidity and temp. Seems accurate. Second purchase. Come with extra batteries and strips to attach to enclosure. Work great!

These thermometers are not only inexpensive, they are perfect for so many applications. They are easy to see, pretty accurate and just the right size to add into may environments. Take care as I don't think they are weatherproof...They are four to a "pack and they come with adhesive to mount them and EXTRA Batteries! Amazing....

For the price point, they work well. A little more variance and less accuracy than some other brand units I own. Compared with those, they error is as advertised within +/- 2% Like the smaller form factor for tighter spaces. The extra batteries are a plus. Only negative is that batteries come pre-installed from the factory, and thus could decrease the life of them.

I picked these up because they were so inexpensive. I have lots of uses here but I was mainly interested in seeing the environmental conditions inside the AMS on my Bambu Labs P1S 3D printer. I was able to mount it so that I can read from the front using some double sided tape. The RH in my shop is around 55% and I measured 35% inside the AMS. I placed 3 of the units out in the open and let them acclimate for a day. They all read with +/- 1 degree and +/- 1% RH and were within a similar range as compared with another monitor I have here. One thing to note. Even though the readings are updated often. The actual sensor response is much slower. This is especially true for the RH sensor. One reason I suspect is due to the small opening on the rear of the units to let the outside air into the case. This would be even worse if you don't allow this to be fully exposed. It could take several hours to reach a stable reading if there is a major change. All in all I very happy with the purchase. YMMV

Bottom Line on Top: A great little therm/hygrometer for the money with some warnings...Overall, this is PRECISELY what it claims to be: a set of four, inexpensive (bordering on cheap), tiny thermometer-hygrometer combos that do exactly what they claim and absolutely nothing else. It is perfect for my needs. It might not be for yours, though. Read on.First, something of absolute no interest to me is the precision. You get whole degrees and that's it. Accuracy is a little more important, but the two-degree range of accuracy is fine for me. I don't have anything that could possibly care about the difference between 74°F and 76°F. However, if either accuracy or precision is critical for you, you need to pay more (probably a lot more) to get it.The other thing on these is a shockingly narrow viewing angle. My best guess is around +/- 6°. Put another way, if you put this on the table you're sitting at, you will see nothing at all until you get the unit about two feet away. Maybe about the same as that black-on-grey-green calculator your dad got for free in school. If you're putting this on a terrarium wall, plan to do some crouching to see the numbers. Again, not an issue for me in any way; that's not what I'm using it for.I really love these little things (and I mean *little*; the person holding it in the pic has quite dainty paws). They could not be better suited to my needs. Unless you care about the items I mentioned, I think you'll love them just as much.

Bought to monitor 3D printing environment, ended up using them to monitor different rooms of the house.Very versatile and easy to read. Interesting to see changed in humidity over the days.

Ensure a comfortable and healthy indoor environment with the Mini Digital Humidity Temperature Meters. This 4-pack of compact and accurate devices allows you to effortlessly monitor both humidity and temperature levels, providing valuable insights for maintaining an optimal living or working space. Adhesive didn't stick long.

**I circled this listings items in green, the others are meters I already had**I unpacked these and left them by my others for about 30 mins. It took a while for them to adjust (kind of slow), but overall they seem fairly accurate, give or take 1-2 numbers, which seems to be pretty standard. They came with extra batteries and 3M double sided tape.However, what bothers me is you can only view these from straight on. If they are at any angle at all they are distorted and you cannot read the numbers. That kind of is a deal breaker for me, as I stick these on the sides of my geckos tank and I always have to read at an angle. Other than that, they seem fine, especially for the price. I'll have to return mine though.