Power Supplies & Accessories Power supplies, fire relays and distribution modules, armored door loops. Accessories include kill switches, camlocks, door loop accessories and cables. APS-200 Power SupplyDual voltage switching power supplies for access control systems PDFT Fire Relay ModulePDFT Fire Relay Module is triggered in response to a fire… PD4C Power Distribution ModuleSplits primary AC or DC output from a power supply into m… DL-1, DL-2 Armored Door Loop18" armored door loops transfer power from door frame to door. Power AccessoriesPower accessories for use with Alarm Controls power supplies.