Mini Hygrometer Thermometer Digital Humidity Meter Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Garden Cellar Fahrenheit(℉)/ Celsius(℃) 2 Pack

I bought this 2-pack for our Grove snail habitat, and they are exactly what I needed. They arrived ready to go and were working perfectly right out of the box. I really appreciated that they came with extra batteries and extra sticky dots—it made mounting them inside the enclosure so much easier! They are small enough that they don't take up much space, but the display is easy to read. It’s great for keeping a close eye on the temperature and humidity levels to keep the snails happy. Excellent value for the price!

Perfect size for me and my use. I got these for my isopod bins and they are very helpful. It helped me figure out that my humidity is a little too high and my temperature is perfect :) It came with batteries in them already and an extra battery for each hygrometer. It also came with a large foam sticker, but I opted for a small glue dot so I can easily view the reading.

Works as expected and well. Common size battery I already have on hand so easy to replace. I am using them for my Bambi 3d Printer and they greatly help track the temperature and humidity.

I have a couple dozen of these. They are nice and small and inexpensive, and they all read within a percent of each other. Impressed. The one caveat is that if you are using them to measure very low humidity, they do not read below 10% (similar to most sensors of this type). Buy these, unless you absolutely need to know those single digit humidity levels. Recommended.

Used to measure the temperature and humidity levels for my gargoyle gecko. Looks to be pretty accurate with the readings. I like how compact it is and it fits well in the enclosure.

One is still working after 18 months. The other stopped working. Very acceptable for the price.

I picked up this 6-pack to monitor overflow cigars that I keep temporarily stored in airtight Tupperware containers. I tend to buy cigars in larger quantities, so sometimes they sit before I make room in my humidors. These little hygrometers are perfect for that purpose. They’re small, easy to tuck inside containers, and give me a quick snapshot of temperature and humidity. They’re not lab-grade precision, but they’re close enough to keep an eye on things and make sure nothing is drifting too far. For the price, getting six of them is a no-brainer. If you need simple, affordable monitoring for secondary storage, these do the job.

As long as you're not using them for anything hugely important, I think that they are okay for what they are. Just be aware that I wouldn't base anything more accuracy is super important on them. I'm using them just to see what the media is like where I'm storing my printer filament, and they will largely work for that. Still, I bought a 15 pack and one of them didn't work at all even after a battery change. The screen itself wasn't working. The others all show slightly different humidity and temperature even though they're all sitting literally next to each other on the table.

They’re very helpful, I use it in my jumping spider terrarium.