... DC, mV DC….etcPhotoelectrical isolation in input, power and output modular, with strong anti-interference ability.High accuracy: +-( ... recordUp to 16-points recording( option)Maximum 16 points relay output,(option)Could select 5VDC, 12VDC, 24VDC auxiliary power ... to 10.000mA4.000 to 20.000mAOutput Module16 channels relay output (Max)RS485/RS232communication interfaceor RS232 printing interfaceDC5V,12V, ...