It emits high-frequency electro-magnetic wave (5.8 GHz) and recieves their echo. The sensor can detect the slight change in the echo caused by movement and microprocessor can trigger the switch "ON"
Detection is possible through doors, glass panes and even thin walls
The radiation emitted is less than one 100th of mobile phone, thus it is totally safe
The reach or the detetcion area can be adjusted between 1~8m radii
Light sensitivity and time delay in shutdown can also be adjusted
Applications: Security Lights, Street Lights, Glow sign boards, Hoardings or any electrical device ,Parking lot lighting, Shops, garden lighting, passage lighting and doorway lighting etc. and other places for automatic lighting