RAB, EM34, Emergency Unit, Rectangular, Series: EM34, 120, 277 V, 0.33, 0.37 W Fixture, 46, 52 mA, 60 Hz Frequency, 2 Heads, 42 Lumens, 3, 5 years Average Life, Nickel-Cadmium Battery Power Source, Wall Mounting, 2-3/4 in H x 4-9/16 in W x 7-7/8 in L Dimensions, Thermoplastic, White,