12V 433MHz Wireless Remote Control Switch Relay Receiver RF Transmitter white

12V 433MHz Wireless Remote Control Switch Relay Receiver RF Transmitter white.Features: The receiver is a learning code wireless remote control switch easy to match the transmitter, and its output mode or operating mode can be altered in accordance with users preference. Equipped with 4 relays, which can rotate or reverse the device to achieve turn-on or turn-off function. Small size, stable and reliable performance and high receiving sensitivity. A wide application range from simple household