The supplied Premium Segment Humidity Temperature sensor senses, measures and reports both moisture and air temperature. The ratio of moisture in the air to the highest amount of moisture at a particular air temperature is called relative humidity. Relative humidity becomes an important factor when looking for comfort. The Humidity/ temperature sensor is designed for indoor use. Premium Segment Humidity Temperature sensor is perfect for maintaining and protecting musical instruments, clothes, electrical devices, houseware, artworks and other humidity sensitive household things.