Intermatic Wall Mount Thermal ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$82.73
$23.11
Intermatic K4321C Wall Mount Thermal Photocontrol, 120 V

Intermatic Wall Mount Thermal Photocontrol 120V with Delay Feature and Weatherproof Design

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Model: K4321C
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$82.73
$23.11
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Intermatic Wall Mount Thermal Photocontrol 120V with Delay Feature and Weatherproof Design

Professional Outdoor Lighting Control with Thermal Protection

The Intermatic Wall Mount Thermal Photocontrol delivers reliable 120V outdoor lighting control with advanced thermal protection and weatherproof construction. This professional-grade photocontrol features a mechanical bimetal switch with cadmium sulfide photocell technology, providing dependable automatic lighting operation for outdoor applications. The unit includes a weatherproof wall plate and neoprene gasket for superior environmental protection, while the built-in delay feature prevents unwanted ON/OFF switching for stable performance.

Professional Features & Benefits

  • 120 VAC, 50/60 Hz Operation: Compatible with standard residential and commercial electrical systems for versatile installation flexibility.
  • Mechanical Bimetal Switch with Cadmium Sulfide Photocell: Provides reliable light-sensing operation with thermal protection for consistent performance in varying weather conditions.
  • Weatherproof Wall Plate and Neoprene Gasket: Ensures superior environmental protection and long-term durability in outdoor installations.
  • Delay Feature: Prevents unwanted ON/OFF switching caused by temporary light changes, reducing nuisance cycling and extending component life.
  • Fail ON Mode: Provides safety backup operation to ensure lighting remains active in case of photocontrol failure.
  • Compact Gray Housing: Professional appearance with dimensions of 1.813" H x 0.938" W x 0.811" D for discreet installation.
  • 2-Year Limited Warranty: Backed by Intermatic quality assurance for reliable long-term performance.

Technical Specifications

  • Applications: Outdoor Lighting Control
  • Country Of Origin: Mexico
  • Depth: 0.811 in
  • Input Voltage Rating Range S : 120 VAC, 50/60 Hz
  • Marketing Description: Intermatic's wall mount thermal-type photocontrol installs into standard outdoor single-gang electr
  • Product Color: Gray
  • Product Height: 1.813 in
  • Product Length: NA NA
  • Product Weight: NA lbs
  • Product Width: 0.938 in
  • Warranty Period: 2-Year limited

Professional Applications

  • Residential Outdoor Lighting Systems
  • Commercial Building Perimeter Lighting
  • Parking Lot and Walkway Illumination
  • Security Lighting Applications
  • Landscape and Architectural Lighting
  • Multi-Unit Property Lighting Control
  • Municipal and Public Area Lighting

Why Choose Intermatic Quality?

Intermatic photocontrols are engineered for reliable outdoor lighting control with weatherproof construction and thermal protection technology. The 2-year limited warranty and fail-safe operation provide confidence in long-term performance, while the compact gray housing ensures professional appearance in any outdoor installation.

Manufacturer Resources

Product Specs

Application:
Outdoor Lighting Control
Country Of Origin:
Mexico
Input Voltage Rating Range S :
120 VAC, 50/60 Hz
Marketing Description:
Intermatic’s wall mount thermal-type photocontrol installs into standard outdoor single-gang electr
Product Color:
Grey
Product Height:
1.813 in
Product Length:
NA NA
Product Weight:
NA lbs
Product Width:
0.938 in
Warranty Period:
2-Year limited
Product Depth:
0.811 in

Intermatic K4321C – Frequently Asked Questions

1) Will the Intermatic K4321C photocontrol mount in a standard outdoor single-gang box?
Yes. The K4321C wall mount thermal photocontrol installs into a standard outdoor single-gang electrical box, and it comes with its own weatherproof wall plate and neoprene gasket for the box face. The body itself is small, 1.813 in H x 0.938 in W x 0.811 in D, so it clears inside a typical single-gang enclosure.
2) What voltage does the K4321C photocontrol run on, and can I use it on a 277V commercial lighting circuit?
The K4321C is a 120 VAC, 50/60 Hz device only. It will work on standard 120V residential and commercial lighting branch circuits, but it is not a multi-tap or 277V control, so do not put it on a 277V or 240V circuit. For those you need a photocontrol rated for that input.
3) Why do my photocells keep cycling on and off at dusk, and does this Intermatic unit fix that?
Nuisance cycling usually comes from headlights, lightning or a passing light source briefly fooling the sensor. The K4321C has a built-in delay feature that ignores those temporary light changes so the fixture does not flick on and off, which also cuts wear on the switching contacts and the lamp.
4) If the photocontrol fails, do the lights go dark?
No. The K4321C is a fail ON design, so if the control itself fails the lighting stays energized rather than dropping out. For security lighting, parking lots and walkways that is the behavior you want, since a dead control leaves the area lit instead of dark until someone gets to it.
5) Is this a solid-state photocontrol or a thermal type?
It is a thermal type. The K4321C uses a mechanical bimetal switch triggered by a cadmium sulfide photocell. Thermal controls like this switch slowly and gradually, which is part of how the delay works; if your spec calls for a solid-state electronic photocontrol with instant switching, this is not that type of device.
6) Can the K4321C be used outdoors in wet weather without an extra cover?
It is built for outdoor use as supplied. The weatherproof wall plate plus the neoprene gasket seals the control against the box, which is what keeps water out of the single-gang enclosure. No separate rain hood is part of the assembly.
7) What is the exact Intermatic part number to order for this wall mount photocontrol, and what color is it?
Order Intermatic K4321C. It ships in a gray housing, which is the only finish this model is built in.
8) Is this photocontrol suitable for controlling perimeter and parking lot lighting across a multi-unit property?
Yes, within its 120V limit. The K4321C is intended for outdoor lighting control and is used on building perimeter lighting, parking lots and walkways, security lighting and landscape or architectural lighting. For standardizing across a property, keep in mind every circuit it lands on has to be 120 VAC, 50/60 Hz.
How fast can I get the Intermatic K4321C delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Intermatic K4321C come with a warranty?
Absolutely. The Intermatic K4321C is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Intermatic K4321C?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Intermatic K4321C from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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