... for 360 visibility6. Relay output 7. Suitable for detecting the heat in house, shop,hotel, restaurant,office, building,school,bank, library ... . Technical Specification ItemDescribeOperating voltageDC9~35V Static current50uA Alarm current23mA(DC 12V)/25mA(DC 24V)Alarm outputRelay OutputContact rating0.5A@DC28VTemperature trip point135 ...