It is not just an individual working unit to turn On/Off Switch to DC12-48V LED Light 0-100% dimmer, but also a great media to join a smart system via RS485 Modbus-RTU comm. port. It means, no matter for simple group LED lights dimming/control or for complicated smart system control, LC-01 is the best choice in market. *4-channel designed led light dimmer and controller is using pwm dimming technology to direct drive led lights, 1~5% dimming no flash concern *each channel max load current 4a (4 channels total output power 768w@48v), with Protection design against overload, short circuit and surges *independent working unit, able to extend working units in series for more channels dimming and control demand *isolate rs 485 and modbus-rtu communication protocal able to connect with hmi tft Touch panel or smart control system like system chart 4 to dim lighting range from fully off "0" to full-on "1000" for different lighting mode and environment change setting *4-channel isolate multi-function digital input able to work with existing or general power On/off switch for light on/off and 0-100% brightness dimming and to connect sensor for On-off, detain or group dimming setting *wide working voltage 12-48v dc, to ensure stable and continued electricity supply for led lights to extend the working life of led lights, industrial power supply working source is recommended *extend ports for remote control or sensor for smart control system *watchdog function supported *easy installation and set up, cost-effective, low maintenance cost, long working life of led and environment protection