INTERMATIC Photocontrol: Thread Stem Photocell Mounting, 1/2 in Stem Dia, SPST, 120V AC

The INTERMATIC K4421M is a fixed stem-mounted photocell designed for automatic dusk-to-dawn lighting control in industrial and commercial applications. It switches lights on at dusk and off at dawn, saving energy and providing security. The SPST switch handles 120V AC loads, and the 1/2-inch stem allows easy mounting into standard fixture knockouts.

The INTERMATIC K4421M is a fixed stem-mounted photocell with a 1/2-inch stem diameter, SPST switching, and 120V AC operation. It includes a washer gasket for mounting. The manufacturer part number is K4421M. This model is suitable for automatic dusk-to-dawn control of outdoor lighting in commercial and industrial settings.

3G Electric supplies the INTERMATIC K4421M photocontrol worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver genuine INTERMATIC components to support your lighting control projects.

To install the INTERMATIC K4421M, first ensure power is off. Insert the 1/2-inch threaded stem into a standard fixture knockout and secure with the included washer gasket and locknut. Wire the SPST switch according to the wiring diagram: typically line to black, load to red, and neutral to white. Mount the photocell facing north to avoid false triggering from nearby lights.