National Battery One/Two Lamp 17-215W T8, T10, T12 Fluorescent Emergency Ballast 120/277V

Fluorescent 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-temperatur enickel-cadmium battery, charger and electronic circuitry in one compact case. Can be used with one 17 - 215W (2 - 8 foot) T8, T10 or T12 fluorescent lamp without an integral starter, including U-shaped, HO, VHO, circline and energy-saving, or (4-pin) long compact. It is also compatible with most one, two, three and four-lamp electronic, standard, energy-saving and dimming AC ballasts. If used in an emergency-only fixture, no AC ballast is necessary. Suitable for indoor locations. It is not suitable for air handling heated air outlets or wet, damp or hazardous locations.