... :it will be activated on when ambient light in the 5 LUX. The main features1. Adopting ... photosensitive technology:Don't work in in a good light to achieve real energy-saving ... on infrared thermal sensor technology: In the dim light,if someone walk in the infrared sensor area, it can ... , 000 working hours.This device can be used in corridor, wash rooms, front door, cloak rooms, ...