Lithonia Lighting, EU2L M12, Emergency Lighting Unit, Low Profile, Series: EU2L, 120/277 V AC, 0.33/0.37 W Fixture, 0.05 A, LED Lamp, 1.5 W Lamp, 2 Heads, 10 years Average Life, 3.6 V DC Rechargeable Ni-Cd Battery Power Source, Ceiling Mounting, 2-3/4 in H x 7-7/8 in W x 4-1/2 in D Dimensions, Thermoplastic, White