Intermatic EK4336S NightFox In-Wall Photocontrol 120-277V

Product Overview

The Intermatic EK4336S NightFox is an electronic wall-mount photocontrol for automatic outdoor lighting control. It permanently installs in a standard single-gang in-wall electrical box and includes the wall plate. A non-drift silicon light sensor with an infrared filter monitors ambient light and controls connected lighting without requiring a separate time clock for normal dusk-to-dawn operation.

Key Features & Design

• Functionality: Provides electronic photocontrol switching with instant ON response and a 2-to-5-second OFF delay. The unit uses a DC relay with zero-crossing circuitry, fail-ON operation, and a 255-joule MOV surge-protection element. Manufacturer design life is 15 years with more than 10,000 ON/OFF switching cycles.
• Installation context: Installs in a standard single-gang in-wall box using #18 AWG wire leads. It is intended for outdoor use and supports LED, incandescent, and HID lighting applications within the published load ratings.
• Notable specifications: 120-277 VAC, 50/60 Hz; electronic silicon-diode photocell; activation ON at 1.5 fc and OFF at 4.5 fc; 9 in wire leads; gray polycarbonate housing; 8-year limited warranty.
• Contractor-relevant details: Verify connected-load type and rating before installation. The product supports up to 1,650W at 277VAC for the stated HID/LED application description, with separate detailed ratings for tungsten and fluorescent/electronic ballast loads.

Performance / Benefits

The electronic sensor and zero-crossing relay are designed for long service life in exterior lighting systems. Fail-ON behavior helps avoid an unintended dark condition if the control fails, while the wall-mount form is useful where the photocell must be positioned separately from the fixture.