Intermatic K4021C Thermal Photocontrol, Button Style, Polycarbonate, Gray

The K4000 Series fixed position mounting photo controls are thermal-type photo controls that fit into a standard outlet box, post lamp or wall pack. The photo controls provide dusk-to-dawn lighting control along with a delay action, which eliminates loads switching OFF due to car headlights and lightning. The thermal-type controls feature a cadmium sulfide photocell and a sonic-welded polycarbonate case and lens to seal out moisture. The design utilizes a dual temperature compensating bimetal and composite resistor for reliable long-life operation over ambient temperature extremes.

• Cadmium sulfide photocell
• Cadmium sulfide photocell
• 9 in leads, sonic-welded polycarbonate housing and lens to seal out moisture
• Most models equipped with a 5/8 in to 18 in threaded side mounting, locking nut and washer gasket
• Delay feature prevents unwanted OFF switching