STRONG SIGNAL - Adopts RF technology, it can pass through walls, floors and doors, control the receiver from any place within a reliable distance. The maximum range can reach 328 feet without obstacle.The learning code offers high security due to the low repetition rate and the relearn mode, which allows you to erase the old code and to relearn a new code when a remote control is lost.High-power charging: The receiver adopts 40A relay, which can charge large-power electrical appliances to ensure long-term stability control. br>Wide Application: It is mainly used in 12V-72V systems (industrial and security control areas, such as light, motor, remote control, wireless security alarm, security alarm, etc.). wireless door, the wireless controller, etc.)NOTE: This is not a potentially free contact that only activates the supply voltage. Please select the appropriate remote control switch according to your device voltage.-