Intermatic EK4136S Stem-Mount Electronic Photocontrol 120-277V

Product Overview

The Intermatic EK4136S NIGHTFOX EK Series electronic photocontrol provides automatic dusk-to-dawn lighting control for LED, HID, and incandescent loads. Designed for permanent outdoor installation, it operates on 120–277V AC and features a stem-mount design for installation in compatible electrical enclosures, junction boxes, and lighting fixtures.

Key Features & Design

• Functionality: Automatically switches lighting ON at approximately 1.5 foot-candles and OFF at approximately 4.5 foot-candles using a non-drift silicon light sensor with IR filtering.
• Installation context: Designed for permanent outdoor installation in compatible electrical enclosures, junction boxes, wall packs, and outdoor lighting fixtures.
• Notable specifications: 120–277V AC input, electronic relay, stem mounting, silicon-diode light sensor, fail-ON operation, and zero-crossing relay circuitry.
• Contractor-relevant details: 1/2"-14 NPSM threaded stem fits standard outlet boxes with a minimum 7/8-inch mounting hole. Supports compatible LED, HID, and incandescent lighting loads.

Performance / Benefits

Electronic sensing and zero-crossing relay technology provide dependable automatic dusk-to-dawn control while helping extend relay life in demanding outdoor lighting applications.