Mini Hygrometer Indoor Humidity Meter Hygrometer Thermometers 6 Pack Humidity Meters Gauge Hygrometer Mini Digital Thermometer Hygrometer with Fahrenheit (℉) for Humidors, Greenhouse, Garden, Cellar

These hygrometers are amazing. Very useful for precise humidity and temperatures during and after sowing. I put them directly under the dome..works great.

These mini hygrometers are a great value. I picked up a six-pack and tested them side by side in the same room—impressively, all six gave identical humidity and temperature readings, which gave me confidence in their accuracy. They're compact and super lightweight, so I’ve placed them throughout the house, near windows, even in the attic next to a humidifier setup and it does confirm the dehumidifiers reading. The screen is easy to read at a glance, and there’s no complicated setup or batteries to worry about replacing constantly. If you want a simple, effective, and low-cost way to monitor indoor humidity in multiple spots, this little pack is a solid option. No complaints at all!

These seem to be decent temperature accuracy. What I didn't like is that they came already activated. By that I mean there was no plastic bit to stop the battery life from being used, so who knows how long these sat in a box running down the batteries. The build quality seems good and the speed at which it detects temperature changes is good.

Like many others here, I'm not using these for gardening or preserving historic paintings in a controlled environment - no, no.. I'm using these to monitor the humidity levels around 3D printing filament. As simple and as silly as it may sound, raw filament does absorb moisture and will cause expansion and popping of the absorbed moisture when it is fed thru a several hundred degree heated print nozzle, leaving bad marks on the prints and unmelted plastic in the nozzle... So, to combat this, we use hygrometers, to monitor moisture content.. The devices that I received were all powered on and reading well. There was 1 or 2 that were out of sync with the rest of the group by a percent or two, so it's not extreme precision, but the work wonderfully enough to get a good read on what is happening in the environment. I say these get a passing grade from me. I appreciate their simple build, good looks, and efficient reads.

We moved recently and I found these in a damp box. They still worked perfectly! Best value for a very reliable product.

My students used these to test the temperature inside their self-made solar ovens. While the thermometers were able to record and display in large print a reading of the air temperature inside the solar ovens, the temperature capped at around 127 degrees F. At this temp, the thermometers' screen turned black, which unfortunately, reduced the effectiveness of the thermometer. They are made of plastic, not the best quality but good enough for setting aside. If you are looking for a simple, discreet, and portable thermometer then this is it for you, otherwise look else where for something that will work at higher temps.

Works well. The batteries still haven't died and ive been using them all for several months. The humidity reader seems to be accurate.

Great Meter, I have two inside my humidor, and one placed on the outside. The humidor holds 125 cigars. I also have one in m y living room and one in my basement. I have had these for 7 mounts. They are surprisingly very accurate. Only vary by 1 %. I love them.