Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture.Multiple transmitters can be used with a single receiver, allowing more than the two-switch limit imposed by using a three-way switch. Some modern vehicles also have built-in transmitters.Wireless light switches eliminate the wire from the light to the switch location. This is useful in remodeling situations where new wiring can be a hassle. Rather than tearing down a wall to gain access to the wires a wireless switch can be used. This avoids any need to access wires and makes remodeling fast and simple.