8 Opto-Isolated Digital Input Channels with (-) Input Common jumpers (Connected to Port A of the Host DAQ PC Card’s PIO chip). 8 Digital Output Darlington driven Channels with “Lamp Test” jumper(Connected to Port B of the Host DAQ PC Card’s PIO chip). 8 Digital Input/Output Channels, accessed by an IDC10M connector (Connected to Port C of the Host DAQ PC Card’s PIO chip). For use with PC-192/A (IDC-50M); PC-36A/B/C & PCI-36C (DB-37F) using 1:1 cables, as well as other DAQ PC-Cards (DB-25F) using a custom made cable. “DB-37F & DB-25F Connector Cable Screen / DGND” linking jumper. Internal / External (+5V) power input is jumper selectable (300mA resettable fuse for PSU protection). External Trigger Connector for PC-36C & PCI-36C DAQ PC Cards. 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 23(H) mm