Intermatic Thermal Photocontrol, Locking Mounting, Series: LC4500, 480 V AC, 15 A, 50/60 Hz Frequency, 7200 W Tungsten, 4000 VA Ballast, Spark Gap Arrester, 30 to 90 s Timing, Cadmium Sulfide Sensor, 0.5 FC ON, 15 FC OFF Sensitivity, Environmental Conditions: -20 to 104 deg F, 3650 Cycles Operating Cycles, Fixture Mounting, Polypropylene, Gray/Yellow, 3 in Dia x 2-3/4 in H Dimensions