DC 12V 4-Channel Wireless Remote Light Relay : REMOTE CONTROL - EASY TO SET UP AND USE Stable and reliable performance, high reception sensitivity EXCELLENT STABILITY - The relay module provides high signal sensitivity at a lower cost and is resistant to interference SIGNAL - Can pass through walls, floors and doors, control the receiver from anywhere at a distance GREATER FLEXIBILITY- adopts directionless wireless coding technology, allowing independent control without mutual interference, can be flexibly configured in terms of quantity and work WIDE APPLICATION-can be used in industrial control, agriculture, home automation and safety fields such as remote lights, sirens, locks, motors, fans, winches, linear actuators, doors, , electric solenoid valves, safety, business and various equipment Specification: Operating voltage: DC 12 V Output Current: 10A Operating frequency: 433 mHz Channel: 4 channels Reception Sensitivity:-105dbm 7 these works: Yoga, interlock, self-lock, 2CH yoga 2CH interlock, 2CH yoga 2CH self-lock, 2CH interlock 2CH self-lock, 2CH interlock 2CH interlock Modulation: ASK coding: intelligent learning code Remote distance: 100 meters contains: 1 4-channel relay receiver 2-Piece Remote Transmitters