Intermatic EI400WC Electronic ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$190.74
$156.14
Intermatic EI400WC Electronic Countdown Timer, Programmable, 120-277 VAC, 50/60 Hz, 1 Second to 24 Hours, White

Intermatic EI400WC Electronic Countdown Timer 120-277 VAC Programmable 1 Second to 24 Hours White

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Model: EI400WC
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Intermatic EI400WC Electronic Countdown Timer 120-277 VAC Programmable 1 Second to 24 Hours White

Professional Programmable Timer Control for Versatile Applications

The Intermatic EI400WC Electronic Countdown Timer delivers reliable programmable control with 120-277 VAC compatibility and flexible countdown intervals from 1 second to 24 hours. This professional-grade timer features no neutral wire connection for easy retrofitting, single-pole or 3-way switch compatibility, and white finish suitable for indoor lighting control and air movement applications.

Professional Features & Benefits

  • 120-277 VAC, 50/60 Hz Operation: Wide voltage range compatibility ensures versatile installation options across residential and commercial applications.
  • Programmable 1 Second to 24 Hours: Flexible countdown intervals provide precise timing control for diverse load management requirements.
  • No Neutral Wire Connection: Simplified installation and easy retrofitting reduces installation time and complexity.
  • Single-Pole or 3-Way Compatible: Versatile switch configuration options accommodate various wiring scenarios and control requirements.
  • Non-Volatile Memory Storage: Settings retention ensures reliable operation and eliminates reprogramming after power interruptions.
  • Incandescent/Fluorescent/CFL/LED Compatible: Universal load compatibility supports modern lighting technologies and legacy systems.
  • 5-Year Limited Warranty: Extended warranty coverage demonstrates manufacturer confidence in long-term reliability and performance.

Technical Specifications

  • Applications: Air Movement & Ventilation;Indoor Lighting Control
  • Country Of Origin: China
  • Depth: 1.188 in
  • Input Voltage Rating Range S : 120-277 VAC, 50/60 Hz
  • Marketing Description: Offering a programmable countdown time between one second and 24 hours, this versatile timer can ha
  • Product Color: White
  • Product Height: 4.125 in
  • Product Length: NA NA
  • Product Weight: NA lbs
  • Product Width: 1.75 in
  • Warranty Period: 5-Year limited

Professional Applications

  • Indoor Lighting Control Systems
  • Air Movement and Ventilation Control
  • Commercial Facility Load Management
  • Residential Automated Controls
  • Professional Office Buildings
  • Retail and Commercial Establishments

Why Choose Intermatic Quality?

Intermatic delivers proven reliability with 5-year limited warranty coverage and professional-grade construction. The white finish and compact dimensions (4.125" H x 1.75" W x 1.188" D) ensure clean integration into standard electrical installations while maintaining dependable performance across diverse applications.

Manufacturer Resources

Product Specs

Application:
Air Movement & Ventilation;Indoor Lighting Control
Country Of Origin:
China
Input Voltage Rating Range S :
120-277 VAC, 50/60 Hz
Marketing Description:
Offering a programmable countdown time between one second and 24 hours, this versatile timer can ha
Product Color:
White
Product Height:
4.125 in
Product Length:
NA NA
Product Weight:
NA lbs
Product Width:
1.75 in
Warranty Period:
5-Year limited
Product Depth:
1.188 in
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Lighting Controls & Sensors
Product Type:
Time Switch

Intermatic EI400WC – Frequently Asked Questions

1) Does the Intermatic EI400WC countdown timer need a neutral wire in the box?
No neutral is required. The EI400WC wires without a neutral connection, which is what makes it workable in older switch boxes where only the hot and the switch leg are present. That is the main reason it gets specified on retrofits rather than a timer that demands a neutral run back to the box.
2) Will the EI400WC work on a 277 volt commercial lighting circuit?
Yes. The EI400WC is rated 120-277 VAC, 50/60 Hz, so the same part number covers a 120 V residential or office circuit and a 277 V commercial lighting branch. That is useful if you are standardizing one timer across a building with both voltages.
3) Can this Intermatic timer be used in a 3-way circuit with a second switch?
Yes. The EI400WC is compatible with single-pole or 3-way wiring, so you can leave an existing companion switch in place at the other end of the run and put the timer at one location.
4) Will an electronic countdown timer like this run LED and CFL lamps without flicker issues?
The EI400WC is listed as compatible with incandescent, fluorescent, CFL and LED loads, so it is not restricted to legacy incandescent lighting the way some older mechanical spring timers are.
5) What is the shortest and longest countdown I can set on the EI400WC?
Anywhere from one second up to 24 hours. That range covers a short bathroom exhaust fan run, a multi-hour ventilation cycle, or an all-day lighting period, all from the same device, so you do not have to pick a fixed-interval timer per application.
6) Do I lose the timer settings on the Intermatic EI400WC after a power outage?
No. Settings are held in non-volatile memory, so the programmed countdown survives a power interruption and there is no reprogramming trip for maintenance after the building loses power.
7) Is this timer suitable for controlling a bathroom or restroom exhaust fan?
Yes, air movement and ventilation is one of the two stated applications for the EI400WC, along with indoor lighting control. Property managers typically set a short countdown on restroom and locker room fans so they shut themselves off instead of running all day.
8) Will the EI400WC fit a standard decorator wall plate opening?
The body measures 4.125 in high, 1.75 in wide and 1.188 in deep, and it comes in white, so it matches the other decorator-style devices on a gang plate in an office or common area.
9) What exact part number do I order for the white Intermatic electronic countdown timer?
Order Intermatic EI400WC. That is the manufacturer part number for the white 120-277 VAC programmable electronic countdown timer, and it is the only configuration in the family under that designation.
How fast can I get the Intermatic EI400WC 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 EI400WC come with a warranty?
Absolutely. The Intermatic EI400WC 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 EI400WC?
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 EI400WC 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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