The digital input board has 16 digital input points. Each point accepts an input in the form of a dry contact closure that can be used to control switches, relays, and solenoids. Power consumption is 0.2 W, and 12 Vdc wetting voltage is provided onboard. Each input has termination for wetting voltage, signal in, and cable shield.

Digital Input Board, TRU Card Rack
PCB 4-0443-856 Revision B
PCA THE-4-0443-857 Revision C
1442 SNX 00000120