Simple Wiring,Easy to use. The product comes with terminal blocks, the wiring is simple, and the matching signal is also very simple. 3 modes of operation can be ( momentary / toggle /Latched ). You can easily set it up yourself if you want. Remote Control: Stable remote signal: 50 meters of stable signal transmission, the remote control is waterproof, and it not affect the use after being immersed in water and taken out. Support flexible pairing: One receiver can store about 20 transmitters, and one transmitter can also control multiple receivers. Receiver: Stable and reliable performance, high receiving sensitivity ( 97dBm). Small size, easy installation The chip code is EV1527 learning code, which is the most popular technology at present, making the remote control system more secure. The receiver adopts 10A relay, which is suitable for high-power electrical appliances and ensures long-term stable control. Wide Range of Application Scenarios: The products can be used in homes, farms, factories, offices, laboratories, supermarkets, etc. You can remotely operate electric locks, electromagnetic doors, fans, lamps, lighting, ventilation, water pumps, signal transmission and DIY remote control switches, etc. Due to different product batches, the appearance , which does not affect the use Colour:White Material:plastic Package Contents: 2 x Remote Control Switch 2 x Remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.