INTERMATIC
MFR #K4221C
UPC #78275002029
INTERMATIC 120V Photo Control, Model K4221C
$36.72
/
In Stock
Shipping calculated at checkout.
Pickup available at Independent Electric Supply
Usually ready in 4 hours
The Intermatic K4221C is a 120V photo control built for professional electricians and contractors who need reliable dusk-to-dawn switching on outdoor lighting installations. Whether you're wiring up parking lot fixtures, security lighting, or residential exterior luminaires, the K4221C delivers consistent, automatic on/off control without manual intervention. Its mechanical bimetal switch paired with a Cadmium Sulfide (CdS) photocell provides proven, field-tested performance, while the built-in delay feature eliminates nuisance tripping caused by passing headlights or brief cloud cover — keeping your installations running exactly as intended.
Specifications
| Input Voltage | 120 VAC, 50/60 Hz |
| Mounting Style | Stem and Swivel Mount |
| Stem Size | 1/2" diameter, 1/2"-14 NPSM thread |
| Switch Type | Mechanical Bimetal, SPST |
| Photocell Type | Cadmium Sulfide (CdS), Side-mounted sensor |
| Activation (Turn ON) | 1 to 5 fc |
| Activation (Turn OFF) | 3 to 15 fc |
| Sensor Time Delay | 30 sec to 90 sec |
| Fail Mode | ON |
| Compatible Lamp Types | Fluorescent, HID, Incandescent |
| Incandescent / Tungsten Load | 15 A / 1800 W |
| Magnetic Ballast Load | 8.3 A / 1000 VA |
| Housing Material | Polycarbonate (UV resistant) |
| Colour | Grey |
| Usage Environment | Outdoor |
| Operating Temperature | -40°C to 70°C (-40°F to 158°F) |
| Wire Leads | #18 AWG, 6" |
| Certifications | cULus, cCSAus, Green Energy, Title 20 |
| Country of Origin | Mexico |
| Warranty | 2-Year Limited |
| Dimensions (H × W × D) | 5" × 1.563" × 1.563" (127 × 39.7 × 39.7 mm) |
INTERMATIC 120V Photo Control, Model K4221C
$36.72
/
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