SHT21 Series 3 V -40 to +125 °C Digital Humidity & Temperature Sensor IC - DFN-6, Soil moisture, Humidity sensor chip, Relative Humidity, Humidity monitor, Dew point sensor, home humidity sensor IC, digital meter Sensor https://www.futureelectronics.com/p/semiconductors--analog--sensors--humidity-dew/sht21-tr-1-5ks-sensirion-1049817