Stem Mount Photo Control - 1800W - 15 Amp - 120 VAC

2 Reviews
SKU: K4121C
Brand: Intermatic
Mfr Part Number: K4121C

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The K4100 Series Photo Controls feature stem mounting, thermal-type, controls with single and multi-voltage models. Thermal-type photo controls provide dusk-to-dawn lighting control and a delay action, which eliminates loads switching OFF due to car headlights, and lighting. 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. These models are California Title 24 compliant.

  • Cadmium sulfide photocell
  • Sonic-welded polycarbonate housing and lens to seal out moisture
  • Delay action eliminates load switching OFF due to car head lights and lighting
  • 6" leads
  • Light level slide adjustment
  • Controls come with a washer gasket and locking nut
  • "M" Models are heavy duty die cast housings

Brochures & Spec Sheets

Spec SheetIntermatic K4121C Specs

Electrical & Operational Information

Wattage Rating (W)1800Input Voltage120V
Amps15Operating Temperature-40°F - 158°F


Color FinishGrayControl OperationWired
Fixture Mounting TypeFixture mountHousing MaterialMetal
Sensor TypeThermal Photo controls

Warranty & Certifications

CA ComplianceTitle 20UL Listedyes

Dimensions & Measurements

Product Length (in.)1.57Product Width (in.)1.57
Product Height (in.)3

Ratings & Reviews

2 reviews

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  • 2 stars
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  • 1 star
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Photo Control

by -

Works great, was easy to install, will be buying more.

Stem mount photo control

by -

Photo control arrived in a short 3 day period, well packaged,and installed vary easy. Looks nice and appeared to be a well built unit.