The ENER-J wireless key fob switch is portable and very easy to use. It has a built-in micro energy generator – when the switch is pressed the kinetic system transforms the movement into energy. This transmits a signal to the receiver to turn the lamp or other load on or off. This solves the issue of having to install switch wiring which has been a problem ever since the invention of the lamp. · · · No Wiring. No Battery. Easy Installation and Usage · · Collection of Micro Mechanical Energy · · Low Power Hardware and Highly Reliable Communication Protocol · · Easy installation and usage · · Lifespan: 200,000 On/Off uses