Brightness metering: Using photosensitive control, It 't turn on the light in the daytime or strong light environment, Also can adjust free induction lights in any light environment. Automatic turn on while detected people come, after the people left delay automatically turn off the lights. Applicable to the corridor, passageway, toilet, basement, warehouse, garage and other places of automatic lighting. Infrared technology based automatic motion sensor switch. new and high quality. Random Delay: After it opens, during the delay period if there is no human activities, has the delay time on the job, properly adjust freely within the scope of delay time., Weight: 0.25794084654 pounds, Manufacturer: HWIREUIGT