Intermatic EI400WC Timer

The Intermatic EI400WC is a heavy-duty digital auto-off timer designed to provide to-the-second precision for commercial and residential HVACR and lighting control. Built to replace up to 16 different spring-wound models, this unit eliminates ticking noise and mechanical failure points while supporting 120-277 VAC and 12-28 VDC applications. Its versatile 20 Amp resistive rating makes it ideal for managing whole house fans, bathroom ventilation, and high-wattage lighting loads. The no neutral wire required design simplifies retrofit installation, allowing technicians to upgrade existing single-pole or 3-way switches without pulling new conductors. Reliability is maintained via a replaceable CR2 lithium battery that preserves performance during power outages, while non-volatile memory ensures your programmed intervals remain intact. With a timing range from 1 second to 24 hours and a lockable settings feature to prevent unauthorized tampering, the EI400WC delivers professional-grade control for any countdown time interval.

• Universal Compatibility: Supports incandescent, fluorescent, CFL, and LED compatible loads without minimum wattage requirements.
• Advanced Notification: User-selectable audible beeps or visual light flashes alert users before the load switches off.
• Flexible Wiring: Designed for both single-pole and 3-way switch configurations, making it a go-to for multi-switch corridors and large rooms.
• Contractor-Grade Durability: Features an isolated switch allowing for the control of both AC and DC loads up to 1 HP.
• Precise Control: Digital accuracy facilitates energy savings by ensuring equipment only runs for the exact duration required.

Does this timer require a neutral wire?
No, the Intermatic EI400WC is specifically engineered for easy retrofitting and does not require a neutral connection, making it ideal for older electrical boxes.

Can I use this to control a 277V circuit?
Yes, this programmable electronic timer is rated for multi-voltage use, including 120, 208, 240, and 277 VAC commercial circuits.

Will it work with my LED shop lights?
Absolutely. Unlike many older electronic timers, this model is fully LED compatible and handles the inrush current associated with high-efficiency drivers.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.