High-power charging: The receiver uses a 40A relay, capable of handling high-power electrical appliances with stable long-term control. (Note: Max Load: 30A) Strong RF signal penetrates walls and doors without interference; maximum range up to 328 feet in open areas. IP65 waterproof design – The wireless remote control switch is suitable for indoor and outdoor use. Safe to use in damp locations. Do not submerge in water. Easy to install – Simply connect the receiver between the device and the power source. Control your device on and off remotely using the included remote. Wide application: Ideal for use with pumps, motors, lights, fans, dust collectors, sprayers, car wash systems, bells, and various types of electrical equipment.