Factory or field installed inside or outside (field only) fluorescent fixture to operate lamps at reduced light output, providing optimum glare-free illumination for a minimum of 90 min upon interruption of normal powerDurable thermoplastic/metal housing resists impact, scratches and corrosionUL94 VAC-0 flame ratingReduced profile footprint fits in the tightest applicationsPolarized quick-connect pilot light/test switch assembly simplifies installationPilot light and test switch provide visual and manual means of monitoring system operationOperates one 2 to 4 ft or U-shaped fluorescent lamp for 90 minMulti-volt input capability (120 to 277 VAC, 50/60 Hz)Additional input lead provided to allow switching of fixtureConstant current type chargerInput circuit provides high efficiency and reliable operationHigh efficiency push-pull inverter is the most effective method of converting DC power, it provides maximum light output, battery life and reliabilitySealed, maintenance free, high temperature range nickel cadmium battery ensures long life over wide temperature rangesAutomatic battery recharge after 90 minute discharge32 to 100 deg F optimum temperature range