8 DPDT Electro-Mechanical Relay Channels (Connected to Port’s A; B or C of the Host DAQ PC Card’s PIO or DIO circuitry). For use with PC-43A1/2/3/4 & PC-43D using a 10way 1:1 ribbon cable, as well as other DAQ PC-Cards using a custom made cable. External (+12VDC) power needed to energize the relays (0.56W each = 4.48W Total) = 373mA. High quality screw terminals for easy field wiring. There are four 3.2mm diameter holes for mounting or a DIN-RAIL Mounting Base may be fitted (recommended for quick hassle free installations). Dimensions: 107.5(W) x 143.5(L) x 30(H) mm