In the late 1990s manufacturers advanced the light switch by adding radio wireless transmitters and receivers. If you plan to install an enclosed fixture or dont want to deal with dead batteries buy a self powered wireless switch kit do an internet search for wireless batteryless switch.

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How do wireless light switches work. In a wired wireless system portable switches transmit on off and dim commands to a receiverswitch module installed in the wall. Rather than tearing down a wall to gain access to the wires a wireless switch can be used. This switch module interrupts the power going to the light fixture. These two pieces of technology are the only things that are needed in turning a standard light fixture or load into a wireless manifestation of the same function. The transmitter and a receiver are the two main pieces for a wireless light switch to set up. These two pieces of technology are the only things that are needed in turning a standard light fixture or load into a wireless manifestation of the same function.
Transmitting a wireless signal. The act of pressing the switch generates enough energy to send a wireless signal to the lighting system which then turns lights onoff. It sends a wireless coded command to the relay mounted inside the ceiling electrical box. Wireless light switches eliminate the wire from the light to the switch location. This is the same concept for wireless light switches. The switch never needs batteries.
The transmitter and a receiver. Mechanically powered flashlights require no batteries but still provide light by either turning a crank or shaking the flashlight. This is useful in remodeling situations where new wiring can be a hassle. Transmitting a wireless signal. This avoids any need to access wires and makes remodeling fast and simple. There are two main pieces to a wireless light switch set up.
Gallery of How Do Wireless Light Switches Work


