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Emergency Lighting Equipment -- Replaces BDL900
For damp locations; One-lamp emergency illumination; End-of-lamp-life compatible
The B90 emergency ballast works in conjunction with an AC ballast to convert new or existing fluorescent fixtures into emergency lighting. The emergency ballast consists of a high-temperature nickel-cadmium battery, charger and electronic circuitry in one compact red case.
When AC power fails, the B90 immediately switches to the emergency mode, operating one lamp at a reduced lumen output for a minimum of 90 minutes. When AC power is restored, the emergency ballast automatically returns to the charging mode.