RF 433MHz refers to a pair of electrical RF transmitter and receiver modules that are used to broadcast and receive radio signals between any two devices. The data is sent from the transmitter end by the transmitter module and received at the receiver end by the receiver module. The frequency of this RF transmission will be 433MHz.
Features:
This RF receiver adopts RF technology. The signal of the wireless RF switch can pass through walls, floors and doors, steadily control from anywhere within a reliable distance, with no obstacles.
The wireless receiver switch is easy to use and safety, working voltage: DC6V-DC12V; maximum load: 0.2 A. Wireless control, easy to use, learn, relearn and control. 
Flexible operation, small size, stable and reliable performance, high receiving sensitivity and low power consumption.
The wireless RF switch is a learning code wide range of applications from simple domestic remote control to autonomous control , such as DIY, LED lights, lamp beads, Christmas tree light strings, light control switches etc. 
Three different modes are available: Momentary Mode?Toggle Mode?Latched Mode