The SHT21P is a Humidity and Temperature Sensor contains a capacitive type humidity sensor, a band gap temperature sensor and specialized analog and digital integrated circuit - all on a single CMOSens? chip. This yields in an unmatched sensor performance in terms of accuracy and stability as well as minimal power consumption. The complete over-molding with the exception of the humidity sensor area protects the capacitive humidity sensor against external impact and facilitates excellent long-term stability. This sensor is suitable for large volumes as well as for low volumes.