Provides 180-320VDC (equals to 120-230VAC) the load during emergency mode operation. Can be operated as NORMALLY-ON, NORMALLY-OFF or SWITCHED LOAD. Universal 120-277V, 50-60 Hz input. Charge/Power " ON" LED indicator light and push-to-test switch for mandated code compliance testing. 90 Minute minimum emergency operating time over full temperature range. Input overcurrent protection: Fusible link. 24 hour maximum battery recharge time.