4-Pack Mini Digital Thermometer Hygrometer Meters Gauge Indoor Large Number Display Temperature Fahrenheit (℉) Humidity for Home Office Humidors Jars Incubators Guitar Case

Even came with spare batteries. Would recommend

I have 16 of these, ordered on 4 occasions. I set them up together and monitored their readings in different locations. For temperature they stayed within one or two degrees of each other; same with humidity. There is no on/off switch but seem to stay on for about a year. And the good news is that it's easy to change out the 2 little LR44 batteries. I set them up around my house to check the temperature distribution. They are so small they are seldom noticed. And so inexpensive you could order a dozen and just discard any that don't agree with the others. When hunting or backpacking I carry a couple to check the temperature--like inside and outside of my tent. Like all my pack items, they are small and lightweight. For the price they are a bargain.

They work and are accurate. When I take them out jars they accurately adjust to room humidity. The battery life is good as well. Mines stayed working for like 6 months. Nice little tool to have

These are easy to read and work better than my analog one on a thermometer. With both temperature and humidity in digital format, they are easy to read. The shipper included a couple of extra replacement button batteries.

I love this product. It has been a lifesaver for me in the winter. I live in New Mexico and it gets very dry in the winter and we go around shocking one another. If I see this dip below 30 then I know that I need to add some moisture to my air. I like that it also shows me the temperature in the room, it is very helpful to me because my house is very large.

3 seem to have accurate temps (as confirmed by temp gun). 2 agree on humidity with the 3rd off by about 2%. The 4th one either has random numbers or is consistently off by +/- 2 degrees and like 5% humidity.Overall they're easy to read and cheap. I am using a couple for quick glance stats for a reptile enclosure. I would NOT recommend them as the sole monitors for a pet (I also have a thermostat and temp gun for my snake) but they would probably work well for something like storage conditions (though I would use 2 for a more accuracy).They fit my needs so I'm fine with my purchase but you may not be happy if you are expecting too much.

I bought these about 3 years ago and am about to buy another set because a couple seem to have been lost in a move. I have used these in a refrigerator and have one in several rooms in the house to be able to compare temperatures. These have worked great they entire time and I like them enough to repurchase.

good to have 4 to put in different rooms

Used these for my oct harvest and they worked great ......its currently the follwing Mar and afyer being in a freezing garage since Oct they still work great

The devices don’t even closely agree with themselves!Batteries were not included.Took 19 days to arrive.

I bought eight of these to cure my cannabis, now that it is legal in Canada, and I lined them all up to see how close they would be in readings and to my pleasant surprise they were within 2°F and 2% relative humidity which I thought was pretty outstanding for the price I pay for these little units. A few weeks later they are all still working.

Product did not match description or photo, one piece faulty, returned but no refund issues. BUYER BEWARE

These thermometer/hygrometers work well, seem accurate and easy to use. My only issue is part of the temp on the digital screen of one of the two units doesn't show (bottom line). I can still extrapolate the number fine though since most of it is there. They are a little smaller than I thought they would be, but that is fine. You can still see the readings. Good value for the cost and very quick shipping with good product packaging. Even sent extra batteries for them! :)