Manufacturer Inkbird. Alarm Function: It can be customized alarm values, when the temperature and humidity exceed the preset value, will receive an application alert notification. Accurate sensor: Temperatures Range: -4℉~140℉/-20℃~ 60℃( Accuracy:±0.5℉/±0.3℃); Humidity Range:0%RH~99%RH( Accuracy:±3%RH).
eBay