Features: Equipped with a 30A relay, capable of handling high-power electrical appliances for long-term stable control. Utilizes RF technology, enabling signal transmission through walls, floors, and doors; provides reliable remote control from most locations within an open area. Maximum range up to 3000M in open space without obstacles. This long-distance remote switch is suitable for use with pumps, mud pumps, motors, lamps, fans, sprayers, car washers, and various types of electrical equipment. The remote control offers extended range and easy installation. Features an external antenna that significantly improves receiving distance. Wide tinned terminals provide stable current output, while insulation grooves enhance safety and reliability. The receiver incorporates ultra-high sensitivity modules, offering superior anti-interference performance compared to standard super-regenerative and conventional super-heterodyne modules available on the market. Includes water pump remote control switch receiver only. Other accessories shown in images are not included. Specifications: Material: ABS + Metal Remote Control Size: Approx. 13.5 x 4.2 cm / 5.31 x 1.65 inches Switch Size: Approx. 12.38 x 6.8 x 3 cm / 4.87 x 2.67 x 1.18 inches Working Frequency: 433MHz / 315MHz Working Mode: Self-locking, Interlocking Output Mode: Terminal block Demodulation Method: ASK Control Method: Remote control or manual button control via controller Working Voltage: DC 12V - 48V Standby Power Consumption: Low power consumption