This is a wireless switch controlled by a transmitter similar to a car alarm control security system.Wireless 4 Channels Multifunctional Relay Module with 3 Wireless 4 Buttons Security Remote Control XY-K4-DC+RD099. Remote Control and relay module apply to home and store alarm security system; Relay module & remote control security system suit for electric motor car, automobile, motorcycle alarm device, each kind of windows and doors controller and other industrial control.This ingenious relay module kit allows you to remotely control any 12 Volt DC device. Perfect for controlling any 12V devices such as lights, fans, landscaping lighting and more. This easy-to-wire kit is perfect for anybody with a basic knowledge of electrical wiring, and can easily be wired to many 12V applications.
Other Thoughts:This is a very inexspensive unit to purchase and works well,installed 2 of these in my vehicles and love them.But I must caution any novice installers,not easy to do,there are a lot of areas the can get you self into trouble if you are not familiar with automotive electronics.better to let a professional do the install,expect anywhere from 150-250 bucks labor depending on how many features you decide to hook up.