Features: Measuring range:Temperature: -40℃~80℃Humidity: 0-99.9% RHAccuracy: (in 25℃)Temperature: ±0.5℃Humidity: ±3% RH (10...90RH)Sensor type: Temperature resistive sensor, Humidity capacitive sensorsOperating temperature range: 40℃~80℃Power supply: 3.3V~5.2VDC (5V recommended)Note: Do not include the Thermostat Module.Package Included: 3 x AM2301 Sensor Module (Cable length: about 50cm)