Pocket magnetic wireless light switch is a great alternative to the traditional wiring light switch, you can also add it to the existing lighting system as a three way switch or remote control switch.
Self-powered switch with CR2032 button lithium battery (included), up to 8 years lifetime.
Save wire, pipes and labor cost, easy to add or remove a switch or receiver in the switch system by yourself. 

This wireless switch panel can control unlimited receivers and one wireless receiver can be paired with 8 switch panels, creating a perfect home lighting control system. Ideal to control your garden shed, garage and exterior lighting comfortably from home! 

Up to 1312ft (400m) wireless range in open area, 164ft (50m) wireless range indoor with obstacles. Large wireless range is perfect for home and commercial use.

Thus use safely even in damp places. Strong signal through the walls and remote compatible with Halogen/ Incandescent/ CFL/ Fluorescent/ LED light, fans and other electrical switchboards, etc. 

Max. Integrated power: 1000W.

Compatible with traditional wired switch, but need to turn on the traditional wall switch first, so that the wireless switch can control the light. (The circuit has to be live for the remote to work)

Small receiver fits easily in control boxes such as canopy, distribution box, electrical box. Ideal for use in offices, hotels, restaurants, factories, etc. Working temperature: -40 ~+70