JEDEW 6-Pack Mini Hygrometer Gauge Indoor/Outdoor Thermometer, Digital Humidity Temperature Meter for Humidifiers Dehumidifiers Greenhouse Reptile Plant Humidor, Fahrenheit(℉) or Celsiu(℃)

I used these in the tops on my jars to show the RH of the cannabis inside. Works great and they all show the same reading when together. It’s nice they come with batteries in them and also include a new battery for each. Great touch. Time will tell how the hold up.

Good product and serves my needs well there is a slight variance between devices however they serve my needs. The seller gives clear instructions as well as even Fresh batteries and adhesive adhesive. Definitely will buy again I'm on here today to buy my 3rd set from this seller

The temperature was accurate but I’m doubtful about the humidity reading.

These were perfect for our project. Loved that they sent extra batteries and stickers so you can easily put them were you want them. Very happy with this purchase!! You will not be disappointed.

Temp seems to be pretty close but rh is a joke way off against other devices I test with was worth a shot

When used in a seedling dome, the other hydrometers I've used have moisture build-up and affect the display. e.g. can't read!

Product was great I needed something to use that was inexpensive enough to be disposable it did the job thank you. I

They differ in calibration. But battery last for a year so far

Very shady bunch, that sells garbage for product. If you purchase these be prepared to tape the backs on them to keep the battery door intact and from the battery falling out. The thermometer and humidity gauges all read differently. Im sure with very little effort you will find another product that will perform better. Zero for customer service and zero for product.