At night, the built-in motion sensor turns on the floodlightwhen it detects motion in its coverage area with its 180degree detection angle. During the day, the built-in photocell sensor saves electricity by deactivating the floodlight. 180 Degree 12M Sensor Reflective Halogen. Resistance Aluminium Housing The maximum sensing distance of the security light with motion sensor can reach 12M Impact-resistant Nano material and rugged aluminium alloy housing, these security lights can withdraw no matter rain, snow, heat or cold environment. Ideal for garages, workshops, industrial workstations, storage rooms, equipment rooms and other close task and large area lighting requirements