Feature: 1. Widely used in garage doors, remote control retractable doors, curtains, alarm hosts, alarms, motorcycles, remote control electric vehicles, MP3, lights, cars, security and other civil and industrial supporting appliances. 2. The 433MHz frequency ensures sensitive and powerful signal reception and transmission. 3. High-quality plastic materials and professional PCB circuit boards are safe and noise-free, no sparks, corrosion-proof, moisture-proof, and vibration-proof. 4. Equipped with a portable remote control button for easy remote operation, which is very simple and convenient. 5. Lightweight and compact size, perfect portability and adaptability, does not take up too much space, and is easy to use. Specification: Item Type: Remote Control Switch RelayApplication Range: Remote control switch, remote control on and off of water pump, remote control on and off, positive and negative of remote control motor, remote control socket, remote control LED, remote control audio, remote control switch, remote control Remote Control Transmitter: Code: EV1527 Size: Approx. 45x13mm/1.8x0.5in Channel: 1 CH Material: Plastic + metal Button: 1 button Working Frequency: 433MHz Remote Control Distance: Approx. 50m/164ft Power Supply: Built-in 1pc 80mAh CR2032 button battery Installation Method: Surface mount Receiver: Material: Plastic + metal Size: Approx. 38x34x25mm/1.5x1.3x0.9in Power Supply (Working Voltage): DC 12V Relay: 10A / 250V AC, 10A / 125V AC, 10A / 30V DC, 10A / 28V DC Working Temperature: -40℃-80℃ How to Use: 1. Connect the receiver to the device that needs to be controlled. 2. Use the remote control button to control the switch of the device.. Package List: 1 x Switch Receiver1 x Remote Control Transmitter