【Great Design】Wireless 433MHz RF remote control switch. Stable and reliable performance with high sensitivity. High receiving rate (>97 dBm). A strong signal can penetrate walls, floors, and doors. It can be controlled from less than 50 meters away without obstacles. 【Easy to Use】Extremely easy to configure and reset. There are 3 working modes (momentary/toggle/lock mode). You can easily configure it yourself according to your needs. The working mode of the product is adjustable. These products are tested before shipping and all configured in toggle mode. 【More Flexibility】This receiver contains 2 relays, and there are 3 terminals (normally open, common, normally closed) for each relay. These two relays are independent, so you can control them independently. Control each of them independently by pressing the button on the remote control. Each receiver can store approximately 20 transmitters. One transmitter can also control multiple receivers (the transmitter must match the receiver).