16 Channel, Output control card, with photoeletric Isolation. Features:Standard IDE communication interface16-channel photoelectric isolation repeater outputWorking power supply: DC12V/1AWiring terminal for ON/OFF outputMaximum ON/OFF voltage 125V/AC 0.3A for AC inputMaximum ON/OFF voltage 110V/DC 0.3A 30V/DC 1A for DC inputIndicator light for each channel outputWorking environment: -25°C to 70°C, relative humidity 5% to 95%..