Features: Adopts a 30A relay, capable of handling high-power electrical appliances for long-term stable control Utilizes RF technology to transmit signals through walls, floors, and doors, enabling reliable remote operation from various locations within an open area range of up to 3000 meters Suitable for use with pumps, mud pumps, motors, lamps, fans, sprayers, car washers, and other types of electrical equipment Long-distance wireless remote switch with easy installation; external antenna enhances receiving distance Wide tin-plated terminals on the back provide stable current output; insulation grooves improve safety and reliability Receiver features ultra-high sensitivity modules with superior anti-interference performance compared to standard super-regenerative or ordinary super-heterodyne modules 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: 433 MHz / 315 MHz 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 12V–48V Standby Power Consumption: Not specified