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.

Intermatic® Thermal Photocontrol, Automatic Switching In-Wall, Series: K4000, 120 VAC, 8.3 A, 50/60 Hz, 1800 W Tungsten, 1000 VA Ballast, 30 to 90 s, 18 AWG Wire, Thermal Photo Control/Cadmium Sulfide Sensor, 1-5 FC On/3-15 FC Off, NEMA 3R, Environmental Conditions: -40 to 158 deg F Operating Temperature, Button Fixed Mount, Polycarbonate, Gray, 1-13/16 in L x 1-5/16 in W x 1-9/16 in D

• Mechanical bimetal switch with cadmium sulfide photocell
• Delay feature prevents unwanted ON/OFF switching
• Fail ON Mode

• Instruction/Installation Manual https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Intermatic_K4021C_Instruction_Sheet.pdf
• Specification Sheet https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_7d906a627dc23a8a268a7a863b5c17109ff05fca205d0bfdb1df24be10cf96b7.pdf