Intermatic NIGHTFOX EK4136S El...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$94.13
$39.76
Intermatic EK4136S NIGHTFOX Stem Mount Electronic Photocontrol, 120-277 V

Intermatic NIGHTFOX EK4136S Electronic Photocontrol 120-277V Stem Mount with Surge Protection

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Model: EK4136S
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$94.13
$39.76
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Intermatic NIGHTFOX EK4136S Electronic Photocontrol 120-277V Stem Mount with Surge Protection

Professional automatic lighting control with advanced electronic switching technology

The Intermatic NIGHTFOX EK4136S Electronic Photocontrol delivers reliable automatic outdoor lighting control with 120-277V compatibility and professional-grade surge protection. This stem mount photocontrol features DC relay with zero-crossing circuitry, 255J MOV surge protection, and a non-drift silicon light sensor with IR filter for consistent performance in outdoor lighting applications up to 1,650W at 277 VAC.

Professional Features & Benefits

  • 120-277V Wide Voltage Range: Compatible with both residential and commercial electrical systems for versatile installation flexibility.
  • 255J MOV Surge Protection: Built-in surge suppression protects connected lighting equipment from electrical transients and extends system life.
  • DC Relay with Zero-Crossing Circuitry: Advanced switching technology minimizes electrical stress and provides extended relay life for reliable long-term operation.
  • Non-Drift Silicon Light Sensor with IR Filter: Precision light detection maintains consistent switching points without calibration drift over time.
  • 1,650W Load Capacity at 277 VAC: Handles substantial lighting loads including single or multi-fixture HID and LED installations.
  • 15-Year Design Life: Engineered for long-term durability with over 10,000 ON/OFF switching cycles capability.
  • Fail ON Safety Mode: Ensures lighting remains operational in case of photocontrol failure for continuous safety and security.

Technical Specifications

  • Applications: Outdoor Lighting Control
  • Country Of Origin: Mexico
  • Depth: 1.25 in
  • Input Voltage Rating Range S : 120-277 VAC, 50/60 Hz (Nominal Voltage)
  • Marketing Description: NIGHTFOX electronic photocontrols permanently install on outdoor electrical boxes or outdoor lighti
  • Product Color: Gray
  • Product Height: 2.25 in
  • Product Length: NA NA
  • Product Weight: NA lbs
  • Product Width: 1.313 in
  • Warranty Period: 8-Year limited

Professional Applications

  • Commercial Building Exterior Lighting
  • Parking Lot and Area Lighting Control
  • Security and Perimeter Lighting Systems
  • Multi-Fixture HID and LED Installations
  • Industrial Facility Outdoor Lighting
  • Retail and Office Building Lighting Control
  • Municipal and Public Area Lighting

Why Choose Intermatic Quality?

Intermatic NIGHTFOX photocontrols combine proven electronic switching technology with robust construction for dependable outdoor lighting control. The conformal coated PCB, 8-year limited warranty, and 15-year design life demonstrate Intermatic's commitment to long-term reliability in demanding outdoor environments.

Manufacturer Resources

Product Specs

Application:
Outdoor Lighting Control
Country Of Origin:
Mexico
Input Voltage Rating Range S :
120-277 VAC, 50/60 Hz (Nominal Voltage)
Marketing Description:
NIGHTFOX electronic photocontrols permanently install on outdoor electrical boxes or outdoor lighti
Product Color:
Grey
Product Height:
2.25 in
Product Length:
NA NA
Product Weight:
NA lbs
Product Width:
1.313 in
Warranty Period:
8-Year limited
Product Depth:
1.25 in

Intermatic EK4136S – Frequently Asked Questions

1) Will the Intermatic NIGHTFOX EK4136S photocontrol work on a 277V parking lot lighting circuit?
Yes. The EK4136S is rated 120-277 VAC, 50/60 Hz, so the same unit covers 120V residential feeds and 277V commercial lighting branch circuits without picking a voltage-specific part. At 277 VAC it switches up to 1,650W of lighting load, which covers single or multi-fixture HID and LED pole runs.
2) How does a stem mount photocontrol like the EK4136S attach, and when should I use a twist-lock one instead?
Stem mount means it threads permanently onto an outdoor electrical box or directly onto an outdoor lighting fixture, with the leads wired in. That is the right choice when the fixture has no photocontrol receptacle. If your pole head or fixture already has a standard twist-lock (NEMA) receptacle on top, you want a locking-type photocontrol instead, since the EK4136S is not a plug-in twist-lock unit.
3) What happens to my exterior lighting if the EK4136S photocontrol fails?
It fails ON. If the control dies, the lights stay energized rather than going dark, so security and egress lighting keeps working until someone swaps the unit. For a property manager that means a failed control shows up as lights burning during the day, not a dark parking lot at night.
4) Will the EK4136S photocontrol reliably switch LED fixtures, or is it only for HID?
It handles both. The switching is done by a DC relay with zero-crossing circuitry, which closes the contacts at the zero point of the AC waveform and keeps inrush from LED drivers from pitting the contacts. Rated load is 1,650W at 277 VAC, covering single or multi-fixture HID and LED installations.
5) Does the Intermatic EK4136S have built-in surge protection for lightning-prone sites?
It carries a 255J MOV surge suppressor built in, which clamps transients before they reach the relay and the connected fixtures. The PCB is also conformal coated, which matters in humid or coastal outdoor enclosures. No separate surge module is needed at the photocontrol.
6) Do NIGHTFOX photocontrols drift out of calibration and start turning lights on early?
The EK4136S uses a non-drift silicon light sensor with an IR filter, so the switching point stays put over time and the sensor ignores infrared from headlights and heat sources rather than reading it as daylight. There is no field calibration to perform.
7) What is the exact part number and color if I am standardizing photocontrols across a portfolio?
Order Intermatic part EK4136S, the NIGHTFOX stem mount electronic photocontrol. The housing is grey, and it is manufactured in Mexico. One part number covers every opening from 120V through 277V, which is what makes it practical to stock a single SKU across mixed-voltage properties.
8) How much room do I need inside or above the box to fit the EK4136S?
The body measures 2.25 in high, 1.313 in wide and 1.25 in deep, so it sits in a compact footprint on top of an outdoor box or fixture. Allow clearance above for the sensor window to see open sky, not just the physical dimensions.
9) How long should I expect an Intermatic EK4136S to last on a commercial site before replacement?
Intermatic rates the EK4136S for a 15-year design life and over 10,000 ON/OFF switching cycles. At roughly one cycle a day that cycle count is well beyond a normal dusk-to-dawn duty schedule, so the limiting factor on a site is usually environment rather than contact wear.
10) Can I use the EK4136S indoors or for controlling something other than lighting?
It is built for outdoor lighting control and mounts permanently on outdoor electrical boxes or outdoor lighting fixtures. It needs to see ambient daylight to work, so burying it in a soffit or indoor location defeats it, and its rating is stated against lighting load, not motors or general appliance switching.
How fast can I get the Intermatic EK4136S 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 EK4136S come with a warranty?
Absolutely. The Intermatic EK4136S 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 EK4136S?
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 EK4136S from ZenSupply?
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