The 1-101572-01 is a digital humidity and temperature sensor manufactured by Sensirion. It is a HUMIDICON® digital humidity and temperature sensor measuring relative humidity (RH) with a typical accuracy of ±3 %RH and temperature with a typical accuracy of ±0.3°C. It operates at the supply voltage of 3.3V and includes a selectable I2C bus address. The device also includes a heater which can be used to prevent condensation of humidity when the environmental conditions are close to the dew point. Additional features include temperature-compensated humidity measurements, low-power consumption, and a hysteresis-break reset output.