The FLEXPOWER FPO250/250-E4 is a dual voltage offline power supplybattery charger housed in a large cabinet for expansion and maximum field configuration flexibility. Listed modular accessories include: power distribution, relay based lock control, egress lock control, secondary voltage and network connection. Each power supply provides two pairs of outputs, each pair user selectable for 12 or 24 VDC, the unit is configured in a painted, steel, locking enclosure with tamper switch and integral battery space. One output of a pair provides continuous output power for system use, the second is programmable for either fail-safe or fail-secure operation, activated when the fire alarm disconnect is initiated.