Photo Cell, 2.15 In Height, Polypropylene Housing Material, +158 °F Maximum Operating Temperature, -40 °F Minimum Operating Temperature, Built-In Time Delay Prevents False Cycling Caused By Lightning Flashes or Stray Headlights;Utility Grade Photocontrols Special Features, Culus Certified Standards Met, Contact Position At Night Normally Closed;Single-Pole;Single-Throw Switch Type, 120 V Voltage Rating, 1 Yr Warranty, 1800 W Wattage, 2 LB/Ea Weight