16 (AC or DC) OPTO-22 Solid State Relay Channels (Connected to Digital I/O O/P’s of the Host DAQ PC Card). For use with PCI-62C/63C/73C Digital I/O (DB-37F) or (IDC-40M), using 1:1 cables. Two IDC-20M connectors for accessing the 16 Digital I/P’s and 16 Digital O/P’s for use with other DAQ PC Cards or with the PC-43A1/2/3 DB-37F Connector Cable Screen / DGND” linking jumper. High quality screw terminals for easy field wiring. Internal / External (+5V) power input is jumper selectable (300mA resettable fuse for PSU protection and LED for indication “Power Present”). 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 214.5(L) x 28(H) mm