This is a calibrated digital temperature and humidity module with an onboard sensor DHT11. It can be used for detecting ambient temperature and humidity, through the standard single-wire interface. Note: This sensor does not come with a cable Specifications Temperature: Resolution: 1C Accuracy: 2 Measuring range: 0C ~ 50C Humidity Resolution: 1%RH Accuracy: 5%RH (0~50C) Measuring range: 20%RH ~ 90%RH (25C) Operating voltage : 3.3V ~ 5.5 V Recommended storage condition Temperature: 10C ~40C Humidity: 60%RH or below Resources Product Wiki In the case of working with an MCU: VCC 3.3V ~ 5.5V GND GND DOUT MCU.IO