NSI Photocontrol, Button, Series: 3000, 208 to 277 VAC, 50/60 Hz, 3470 to 4620 W Tungsten, 2080 to 2770 VA Ballast, SPST, 2 min, 16 AWG Wire, Cadmium Sulfide Cell Sensor, 1 to 5 FC (ON)/3 to 15 FC (OFF) Ratio, Environmental Conditions: -40 to 140 deg F Operating Temperature, Flush Mount, Lexan, Black, 2 in H x 2-1/4 in D