【Unique Design】433Mhz RF Wireless Remote Control Switch. Stable and reliable performance, receiving sensitivity (> - 105dBm). Strong signal can pass through walls, floors, doors. it can pass through walls, floors and doors, control the receiver from any place within a reliable distance. The maximum range can reach 164 feet without obstacle. 【Easy to Use】Extremely easy to set up and reset. There are 3 working modes (momentary/toggle/latched mode) can be chosen. You can easily set it up by yourself according to your needs. The working mode of the product is adjustable. This item has already been set up in locked mode. And the "ON" button to turn on and the "OFF" button to turn off. 【High Sensitivity】 The receiver adopts 30A relay. capable of loading large power electrical appliances to ensure long-term stability control. Each receiver can store about 20 transmitters. And one transmitter can also control multiple receivers (the transmitter must match the receiver). 【Quality