Mini Hygrometer Thermometer 2PCS Mini Digital Humidity Gauge, AikTryee Hygrometer Indoor Humidity Monitor, Temperature Humidity Gauge Meter for Humidors, Greenhouse, Garden, Cellar, Closet, Etc

I purchased these to replace the one my python knocked in her water dish and permanently damaged. I mounted these at opposite ends of my 40-gallon terrarium to obtain readings from both the warm and cool ends. In addition to coming with batteries already installed, it came with two sets of replacements, along with Velcro for affixing to interior walls. Use a custom-cut plate of plexiglass to tape under the screen cover to contain humidity, add a heat mat and thermostat and your climate control is good to go!

After I bought my first solid wood guitar, I started researching guitar care. The most noteworthy thing I found was the importance of making sure your humidity is not too low or too high, which can destroy even the highest end of guitars over time. I had no earthly idea what the humidity was in my house so I purchased these cheap hygrometers. It’s been 6+ months and the battery’s are fine on both, and the two read the exact same number side-by side, so they get the job done. Come to find out my humidity is in the optimum range pretty much year round, but it gave me peace of mind that I wasn’t letting my expensive instrument degrade over time.

I use these in my jars to monitor the humidity and it works for what it is but on the back where the battery enclosure is you push it down and slide it to open or close it and the it holds the battery in and pushes it against the connectors and if the door is loose the battery wont push against the connector enough resulting in the screen being faded its nothing serious I just used a little piece of tape and put it in the back side of the door to create more pressure, pushing the battery more against the battery terminal.

Seems to read fairly consistent between the two I ordered. Only had it for 3 months but havent had to replace the battery yet

I had really high hopes for this product. It does a great job at doing what it needs to do the only issue I had with it was it doesnt stay on the tank at all! I have a chameleon, a bearded dragon and two leopard geckos, I had gotten some for all of them. The thermometers only stayed on for a few days before falling off, the adhesive it comes with is just not very strong. Other than that it worked great.

I wanted these for a cigar humidor and to use on a shelf in my room adjacent to the humidor. I was wary based on some reviews and the price point. In short, they seem to work just fine. My small humidor has an analog hygrometer which seems to read about 4% lower than this digital one placed inside the humidor (i.e. analog 68 and digital 72.) Which is more accurate I dont know, but that they basically agree tells me theyre basically working. The adjacent one reads around 58-60 as conditions change in the house. Theyll be interesting to monitor as summer comes on and we install the ACs. They came with batteries installed AND spare batteries, a huge plus since they take button cells. Also, at least in the ranges Ive seen them operate, the values change in increments of 1, not large chunks like switching from 54 to 69 etc as I read in another review. Cheap product, so your mileage may vary

These are accurate and easy to read, but the batteries in both units died within a few days of one another. Batteries lasted only a couple months. When they worked, they were great to monitor the humidity for a hammered dulcimer and non-laminated back guitar.

I got these for the inside of my bearded dragons tank, and they adhere to the tank, easily or easily to read seem to be accurate

I think these are all made in one big factory in china, that said I ordered 2 and there was a 3 point difference in one of them, I did a hygrometer test ( google it) and figured out which one was off so I just add 3 to it and get the correct humidity. These are all a plus/or minus thing

I have 4 of these and they all work great. They all are within like 1 degree accuracy of each other. I use them for my cigars. The batteries died on one and I didnt know these had replaceable batteries. So I went and bought new batteries. Its a tough time changing them. Well the thing doesnt work now. Sometimes it will have power to it but as soon as I put the battery cover back on, nothing. So instead of replacing batteries, considering the price, Ill just buy another one and maybe Ill be able to change the batteries on my other units.