These ProWire Unified Power rack mount models are single and dual voltage access power systems, precision wired for Mercury controllers. ProWire enables the specification and installation of standardized access power equipment across an enterprise for uniform operation, maintenance and servicing. The C4, C8 or M8 control module provide access control inputs capable of voltage or dry contact activation and outputs programmable for failsafe / failsecure operation at either 12 or 24VDC and controlled by the power supply fire alarm interface. The D8 module provides eight auxiliary outputs. In dual voltage systems each output is configurable for 12 or 24VDC operation. ProWire Unified Power rack drawers are painted steel with removable backplate, lock, keys and and tamper switch and come 100% factory tested - ready for final panel installation and field wire termination.