The ESCO self-powered series is designed to operate on battery power in the event of a power failure. Both the battery and charger are completely contained within the standard enclosure. The ESCO self-powered series utilize a solid state transfer technology that eliminates the possibility of relay failure due to particle build up on the relay. Status is easily determined via an LED that indicates AC-ON. A push button test switch allows maintenance personnel to quickly confirm the operational status of the exit on AC fail. Part No 19000132 Fixture Type Indoor Fixture Input Voltage 120/347VAC Wattage (w) < 3.00 Watt Bulb Type LED Bulb Shape LED Strip Face Type Universal Finish Red Letters on White Face Body Width (in) 12.25 in. Height (in) 7.5 in. Depth (in.) 1.75 in. Bulb(s) Included: Yes Battery Back Up Yes Battery Type Sealed Lead-Acid Ni-Cad Recharge Time 24 Hours Letter/Image Color Red Chevrons Universal Arrow Knockouts Housing Thermoplastic Housing Mounting Universal Mounting Material Thermoplastic UL Listed CSA Listed Warranty 1 Year Warranty