Features: Uses a 30A relay capable of handling high-power electrical appliances for long-term stable control Utilizes RF technology that can penetrate walls, floors, and doors, allowing reliable remote control from most locations within range. Maximum range up to 3000M in open area without obstacles Suitable for use with pumps, mud pumps, motors, lamps, fans, sprayers, car washers, and various types of electrical equipment Long-distance remote switch with easy installation. Equipped with external antenna for significantly improved receiving distance. Wide tinned terminals on the back ensure stable current output, while insulation grooves enhance safety and reliability Receiver features ultra-high sensitivity modules offering superior anti-interference performance compared to standard super-regenerative and ordinary superheterodyne modules available on the market Remote control switch receiver included 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 mode Output mode: Terminal block Demodulation method: ASK Control method: Remote control or manual button control via controller Working voltage: DC 12V48V Standby power consumption: Low power consumption