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Automatic Lighting Type
Automatic Timers
Timers Type
Wall Mounted Timers
Load Type
Incandescent / Halogen
LCD Display
Trim Plate Design
Decora / Paddle
Ease of Installation
Beginner (Installs < 10 minutes)
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Automatically Shut Off Your Appliances With Ease
Intermatic EI600WC 7-Day Astronomic Electronic In-Wall Timer, White
Intermatic EI600WC 7-Day Astronomic Electronic In-Wall Timer, White
Intermatic EI600WC 7-Day Electronic In-Wall Timer, White
Item# 25089
Price: Normally $63.67 
Hot Deal $38.13
Free shipping on orders over $175 - See Details


  • All models automatically switch loads with to-the-minute accuracy
  • EI600 Series provide astronomic programming (sunset ON and sunrise OFF settings) to eliminate the need for additional control devices
  • Astronomic programming can be combined with independent programs to provide sunset ON and timed OFF settings

Essential Info

Intermatic EI600WC 7-Day Astronomic Electronic In-Wall Timer is easy to program and provides up to 40 ON/OFF operations per week which can be used for 24-hour or 7-day load control. The astronomic feature provides sunset ON and sunrise OFF settings and the auto daylight savings adjustment means you can "set-it and forget-it". The independent 7-day programming provides complete flexibility for applications where load switching differs each day of the week. The timer has an isolated single pole single throw switch which allows the timer to switch any load type. A 3 wire design allows the timer to be replaced, or be used as a single-pole or 3-way (multi-way) switch.

This product is also available in Almond and Ivory.

This timer can be used for controlling indoor lighting, outdoor lighting, pumps & fans, HID lighting, library lights, classroom lights, fluorescent lighting, PAR lights, heaters, recreational vehicles, air conditioners, porch lights, and carriage lights.



  • Switch: Single-Pole or 3-Way (Multi-Way) Compatable
  • Style: Decorator styling, except EI15MH
  • Special Voltages and Cycles: 50 or 60 Hz.
  • Operating Ambient Temperature Range: 32°F (0°C) to
    104°F (40°C)
  • Shipping Weight: 0.5 lbs. (0.23 kg)
  • Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Intermatic Inc, Tel: (815) 675-7000


    10 Ratings
    5 star: 70%  (7)
    4 star: 20%  (2)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 10%  (1)
    Average Customer Rating
    (10 customer ratings)
    Share your thoughts with other customers
    Mike H -- oakland, CA   2/6/2014
    AStronomic feature is great. Set it 3 months ago and haven't had to touch it. That's what I wanted.
    STUART D -- las vegas, NV   6/7/2013
    Shipped fast, easy to install, worked great!
    ARTHUR -- new city, NY   2/29/2012
    The unit is easy to use and works perfectly. The asto timing is terrific. The only change I would make is to make it have the same astro calculations as the DT620.
    John -- Phoenix   12/10/2011
    I put one of these on my water heater here in Phoenix, and it paid for itself the first month. I put a second one on my pool pump. I hate those mechanical timers, and the price if this one is way less anyway. It's rated for 20A at 277V Resistive. It also has a 3rd lead that I use with an X-10 switch, and now I can turn on and off my hot tub which is attached to my pool wirelessly. I have been using these for 2 years without any problems. Awesome!
    JOHN R. -- broomfield, CO   11/11/2011
    Received order in a timely manner, thank you.
    MATHIEU -- south orange, NJ   10/1/2011
    Does the trick very well, has an easy system to program and follows DST. Even better, no white/neutral wire to hook up, much easier in older houses.
    MARK T -- rochester, NY   5/20/2011
    It's been working for about a month now. Installation was simple, setup was not too bad. I would have to say it works as advertised.

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