A daughter board that features 8 opto isolated digital input channels with 5 - 24 volt AC or DC, with don't care polarity input range, and a withstand voltage of 1000V. 8 reed relays are also included on the card and have a contact rating of 120V AC 0.5A or 30VDC 1A, breakdown voltage is 300V AC/DC min. LEDs indicate energised relays. It is an expansion daughter board for Cat No 17068.