Leaton Wireless Indoor/Outdoor Multi-function Humidity & Temperature Meter Monitor Temperature range-30~70 Humidity range0%RH~100%RH(9V Battery Included) Temperature and humidity are two important factors in maintaining optimal comfort levels and good indoor air quality. Temperature range-30~70,Accuracy of temperature1 or 1.8 Humidity range0%RH~100%RH,Accuracy of humidity3%30~95%5%10~30% Temperature resolution0.1,Humidity resolution0.1%RH Sampling rate2.5 times/second