DFRobot Fermion SHT40 Temperature and Humidity Sensor is a digital temperature and humidity sensor from Sensirion. The SHT40 offers consistent high accuracy within the measuring range. The SHT40 sensor covers a humidity measurement range of 0 to 100%RH and a temperature detection range of -40°C to 125°C with a typical accuracy of ±1.8%RH and ±0.2℃.