Review on 2-Pack Mini Digital Hygrometer Gauge Thermometer – Indoor/Outdoor Temperature Humidity Meter for Humidifiers, Greenhouse, Reptile Plants, Humidors – LCD Monitor, Fahrenheit Display by Jeremy Byard

Delivery was on time, that's maybe the only plus. Otherwise garbage. As soon as I put the 1st in my tarantula's aviary, it showed 90% humidity, which was ridiculously high, so I added the 2nd to see if they matched. An hour later, one showed 89% humidity and the other 77%. Very disappointed, I am returning it while I am writing this review. EDIT: Unless they are in high humidity conditions, they appear to be accurate. I placed both indoors and they show the same temperature and humidity readings. I posted them and checked the active weather report for comparison and both matched correctly except the sensor was off by at least 1-2 points.