Intermatic® Electronic Photocontrol, Locking, 105 to 305 VAC, 2 A, 50/60 Hz Frequency, 1000 W Tungsten, 1800 VA Ballast, SPST Contact Form, 2 to 5 s Timing, Silicone/IR Filter Sensor, 1.5 FC ON, 2.25 FC OFF Sensitivity, NEMA 4/10 Enclosure, Environmental Conditions: -40 to 158 deg F, 3650 Cycles Operating Cycles, Twist-Lock Mounting, Plastic, Blue, 3.18 in Dia x 2.204 in H Dimensions