The precipitation sensor gives a qualitative measurement of precipitation : • the intensity of precipitation : None, Little, Average, Strong, Very Strong • precipitation : Rain, Rain/Snow, Snow Its operating principle is based on an infrared beam that is broken by the raindrops or snowflakes. Mechanical characteristics: Dimensions : 185 x 165 x 85 mm Weight : 400 g Main features: Alimentation : 10 to 30 volts DC Maximum power consumption : 50 mA Sensitive measurement element : Infra-red LED Operational temperature : from -40°C to + 80°C Connection : quadrupole plug connector