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The APC Dry Contact I/O Accessory provides a hardware interface for connecting the host device of a Network Management Card 2 (AP9631 or AP9635, available separately) with peripheral devices. The Dry Contact I/O Accessory includes: Inputs (labeled Zones A and B) for two dry contact devices; One 12V, 25mA power output (labeled Pwr); One Form C relay (relay outputs labeled Output).
Dry Contact I/O Accessories connect to Universal I/O ports on your Management Card 2: AP9635 includes one port and AP9631 includes two ports. Through your Management Card 2 software interface, you specify which alarms will cause a change in the state of the Form C relay. You also set the actions that will occur at the host due to a change in state of your dry contact devices.