Note: The color of the item may vary slightly due to photography and your own computerSelf-locking type: Output data to achieve the trigger flip state.Each self-locking independent of each other.For example: Press A button, A Relay Work. Press A button again, A Relay Off.12V remote control switches,it is recommended over 500mA DC power supply.Application: for anti-theft alarm, remote control electric windows, signal control, industrial control, lifting equipment, Electrical control circuit, etc.Parameters:Operating Voltage: 12VWorking frequency: 315MHZControl Channel: 2 ChannelContact capacity: 10A/250VAC; 10A/30VDCWork status: Inching/Self-locking/InterlockSupporting remote control: 50 ~ 100m (Open Place) two-button remote controlEncoding type: Learning codeDefault working mode: self-lockingBattery: 12V 27ARemote control distance: 30 metersSize: 7x5x4cm/2.76x1.96x1.57inchColor: White, BlackWeight: 82gNote: due to the battery is embargoed in the air transport, so the battery is not include in the package, thanks for your understanding.Operating Instructions:1. The Factory Default is Inching.Press and hold the button A, the Receiver A (Relay A)turns on; Release the button A, the Receiver A (Relay A) turns off.2. Each transmitter and receiver have been finished linking and factory default mode has been set up. When you receive them, you do not need to link again, you just need to connect the wiring according to our wiring diagram layoutPackage includes:1 x Transmitter (Battery is not included)1 x Receiver1 x Screwdriver1 x Wire1 x Cable