Based on infrared technology. When human beings come into te sensing area, the special sensor will detect the human beinings IR, and the switches will switch on the load automatically. When people are still within the sensing area, it will be keep working. When people leaves, it will switch off according to the delaying time set. So in a word, the light will be on when people come, and off when people leave. It’s safe and energy saving.

Sensing Way Passive Working Voltage 180V-AC240V(50Hz/60Hz)
Sensing Theory PIR Power Consumption