This is a calibrated digital temperature and humidity module with an onboard DHT22 (AM2302) sensor, which features higher accuracy and a wider measuring range than a DHT11. This sensor can be used for detecting ambient temperature and humidity through the standard single-wire interface. Comes with an XH2.54 3-pin cable. Resources Product Wiki How to Use In the case of working with an MCU: VCC 3.3V ~ 5.5V GND GND DOUT MCU IO (GPIO) input pin Package Contents 1x DHT22 Module 1x XH2.54 3-pin wire Specifications Temperature Resolution : 0.1C Accuracy : 0.5 Measuring range: -40C ~ 80C Humidity Resolution : 0.1%RH Accuracy : 2%RH (25C) Measuring range : 0%RH ~ 99.9%RH Operating voltage : 3.3V ~ 5.5 V Recommended storage condition Temperature: 10C ~40C Humidity: 60%RH or below Dimensions: 39.92mm x 15.4mm