... (288X288X166mm, up to 40 channels), used the advanced technology, to be designed high quality and performance, isolated, high accuracy, ... 512M Up to 40-points recording( option) Maximum 24 points relay alarm output,(option). 24VDC auxiliary power supply ... CU50 CU100Linear voltage0-5V1-5VLinear current0-10mA4-20mOutput types24 channels relay output (Max)Print/communication interface/portDC24V feedUSB ...