... RTD, mA DC, mV DC….etcPhotoelectrical isolation in input, power and output modular, with strong anti-interference ability.High accuracy: ... 16-points recording( option)Maximum 16 points relay output,(option)Could select 5VDC, 12VDC, 24VDC auxiliary power ... 10mA,4-20mA .OutputRelay outputPrinting or RS485/RS232 communicationDC5V/12V/24V feed Aux.USB interfaceaccumulation displayAlarm modeHigh limit, ...