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The INTERMATIC K4221C is a 120-Volt Stem and Swivel Mount Thermal Photocontrol designed for reliable dusk-to-dawn control of outdoor lighting. This unit features a mechanical bimetal switch with a Cadmium Sulfide photocell, ensuring automatic ON/OFF operation. Its high-strength, UV-resistant housing and 1/2 inch-14 NPSM threaded stem allow for flexible installation on standard outdoor light fixtures or electrical boxes. It is compatible with Fluorescent, HID, and Incandescent lighting applications.
Provides automatic dusk-to-dawn lighting control for outdoor fixtures.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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