PS904-KL-4RL-BBK Von Duprin Power SupplyBase Power Supply (4A @ 12/24 VDC field selectable) (approx. weight 11 lbs) PS904 is able to accept a total of 2 optional distribution boards.
PS904-4RL-FA-BBK Von Duprin Power SupplyBase Power Supply (4A @ 12/24 VDC field selectable) (approx. weight 11 lbs) PS904 is able to accept a total of 2 optional distribution boards.
Base Power Supply (4A @ 12/24 VDC Field Selectable), 4 Relay Board Integrated Logic for Controlling Security Interlocks, Auto Operators and Time Delays, Fire Alarm Relay
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