Intermatic K4321C Wall Mount Thermal Photocontrol with Wall Plate 120V

Product Overview

The Intermatic K4321C is a 120V wall-mount thermal photocontrol designed for automatic dusk-to-dawn outdoor lighting control. It installs in standard outdoor single-gang electrical boxes and supports HID, fluorescent, and incandescent lighting.

Key Features & Design

• Functionality: Mechanical bimetal switch with cadmium sulfide photocell provides automatic light-level control, while a 30–90 second delay helps prevent unwanted ON/OFF switching.
• Installation context: In-wall design includes a weatherproof wall plate, neoprene gasket, and 9-inch wire leads for outdoor installations.
• Notable specifications: 120 VAC, 50/60 Hz, SPST switching, 15A/1800W tungsten incandescent and 8.3A/1000VA magnetic ballast ratings.
• Contractor-relevant details: Fail ON operation and a -40°F to 158°F operating temperature range support outdoor lighting control applications.

Performance / Benefits

Provides automatic dusk-to-dawn outdoor lighting control while the built-in time delay helps minimize nuisance switching caused by temporary changes in ambient light.