Sensor for measuring ambient temperature and humidity. It transmits data via radio waves at 868MHz to the Deca Coordinator RS485 E-WI 868. Typical temperature accuracy 0.2 ° C, humidity 1.8% RH. Sampling frequency can be set from 1 to 60 minutes. Wall installation. Dimensions: 80x80x25 mm. 12Vdc power supply or via battery (not included) with duration up to 7 years in case of sampling frequency at 15 minutes and sufficient coverage of the radio field.