Intermatic EI600WC - In-Wall Decorator Time Switch
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Intermatic EI600WC - In-Wall Decorator Time Switch

Digital 7-Day Astronomic - 40 On/Off Operations Per Week - Single Pole or 3 Way - White

Set it and forget it! The Intermatic EI600WC white in-wall astronomic timer is the ultimate commercial heavy duty astronomic timer. Designate your current time and date and the astronomic feature will automatically adjust this timer for sunrise and sunset times without the use of a photocell. This 1800 to 4155 watt rated timer can control a variety of electrical components including fluorescent fixtures, high wattage lamps, and electric motors. It allows 40 ON/OFF operations per week with the option of 4 separate programming options and can combine astronomic functions with independent functions for highly customized switching. The timer also features non-volatile memory.


  • 40 ON/OFF Operations Per Week
  • Self-Adjusting to Sunrise/Sunset
  • 1800 to 4155 Watt Load Rating
  • 3-Way Switching Capability
  • Digital Display
  • 4 Separate Programming Options
  • Astro/Independent Programming Combinations


Stock Code:  ELEC-EI600WC
Part No.:  EI600WC
Battery Backup:  (1) CR2 Lithium
Finish:  White
Set Points:  40 On/Off Per Week
Switch Rating:  See Attached Spec Sheet
CSA Listed:  Certified
Brand:  Intermatic
UPC:  078275101418
Display:  Digital
Maximum Wattage:  1800-4155 Watt
Sold Separately:  Wallplate
Switch Type:  Single Pole or 3-Way
Case Quantity:  6

Customer Reviews

Rated 4.8 out of 5 by 10 reviewers.
Rated 5 out of 5 by Good Product little pricey but works well and works with cfl's March 29, 2012
Rated 5 out of 5 by By far the best timer for our customers We use these timers in landscape lighting installs and the result has been fantastic. There are about 10 of them that have been in for over a year and have been working without an incident in failure. We can not say enough about the quality of these timers. Had a customer request that we use the GE timer that the home improvement stores sell, so I checked it out. The people on the floor at the store said that every one of the GE devices that they have sold has come back. Not a good track record. March 2, 2012
Rated 5 out of 5 by Great Product I love this product. Its easy to install and with the daylight saving feature, once you get it programmed, you dont have to worry about when your lights are turning on and off. March 1, 2012
Rated 5 out of 5 by Great alternative to light sensors Looks good, works great, automatic dawn/dusk setting works great. Have installed in two different houses I have lived in. October 5, 2011
Rated 4 out of 5 by Works Great, But Observe Max Wattage The product performs as advertised, which is very good, but if you are even within 80% of the max wattage rating, you will find that you have to replace it pretty often. June 30, 2011
Rated 5 out of 5 by Perfect when photocells are not an option Excellent Intermatic quality timer with built in astronical time clock function. I use it for dusk to dawn operation but it can shut off or come on at any time required. Uses a CR3 lithium battery which seems to be holding up well. Has been installed for six months with no problems. Only downside is the sound of the relay makes a distinct click. You would not want this in your bedroom. June 14, 2011
Rated 5 out of 5 by Great timer This is a great timer that is very clean and attractive. I had a little difficulty in the programming, but other than that, it is a great product. June 10, 2011
Rated 5 out of 5 by Great electro-mechanical timer switch There are a lot of fully-electronic timers out there, but they typically require you to have a neutral wire available in the switch box. If you're replacing a regular switch or a mechanical timer, it is possible that you don't have a neutral available in the switch box. If that's the case, then this timer is a wonderful alternative to trying to find a neutral wire. One really nice thing is that it can be calibrated to your geographic location so that it optionally adjusts on and off times based on estimated sunrise/sunset times. This makes it really set and forget. June 10, 2011
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