Model No.: LD-200 Main Features: ¡· Drives 4 channels of LED at Up to 200mA ¡· ¡Ó0.5% Accurate LED Current Matching (Typ.) ¡· Wide Input Voltage Range: 6V to 45V ¡· Output Voltage Up to 60V ¡· Operating temperature : 0 ¢XC to +50 ¢XC . ¡· Storage temperature : -40 ¢XC to +60 ¢XC . ¡· Operating humidity range : 0% to 80% (Non-condensing) ¡· Storage humidity range : 0% to 80% (Non-condensing) ¡· Multi-protect functions : Input over current protection Over voltage protection Over temperature protection LED string open circuit protection Adjustable LED string short circuit protection Output short circuit fault protection ¡· ALS (Ambiemt light sensor ) function for automatic LED current adjustment . Please see: http://www.teleview.com.tw/product/led-driver-board/led-driver-board