$36.19 ea

LED Panels & Troffers
Intermatic ST01C - In-Wall Timer
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Intermatic ST01C - In-Wall Timer

Heavy Duty - Astronomic - 42 On/Off Operations Per Week - White

Set it and forget it! The Intermatic ST01 is the perfect in-wall 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. The white timer allows 42 ON/OFF operations per week with the option of 4 separate programming options for complex schedules. It also includes a lithium battery backup in case of power outages and features a manual override as well as a random mode for a lived-in look while away.


  • 42 ON/OFF Operations Per Week
  • Self-Adjusting to Sunrise/Sunset
  • 1800 to 4155 Watt Load Rating
  • 3-Way Switching Capability
  • Lithium CR2 Battery Backup
  • Digital Display
  • 4 Separate Programming Options


Stock Code:  ELEC-ST01
Part No.:  ST01C
Battery Backup:  (1) Lithium CR2
Finish:  White
Sold Separately:  Wallplate
Switch Type:  Single Pole & 3-Way
Brand:  Intermatic
UPC:  078275127562
Display:  LCD Digital Clock and Readout
Set Points:  42 On / 42 Off per Week
Switch Rating:  See Attached Spec Sheet
CSA Listed:  Certified


Customer Reviews

Rated 5 out of 5 by 6 reviewers.
Rated 5 out of 5 by great idea great to have exterior lights on timer June 13, 2014
Rated 5 out of 5 by Lights on, lights off - no sweat! This is a great improvement over the old Intermatic mechanical timers which had to have 'on' and/or 'off' times reset over the course of the year, as sunset (0r sunrise) varied. The times programmed onto its memory make this unnecessary. A great device and excellent application of technology. March 7, 2013
Rated 5 out of 5 by Love the Astronomical feature. Low cost and very flexible. May 20, 2012
Rated 5 out of 5 by Exactly what I was looking for Easy to Install Works as designed Good price October 14, 2011
Rated 5 out of 5 by Very useful Product I now have a few of these Timers, but they are hard to find and can be expensive if you don't shop around. The programming instructions are intense, but OK if you read thru them a couple of times before programming. The screen is a bit small also if you are optically challenged, so make sure you have good lighting when you program. October 6, 2011
Rated 5 out of 5 by Work very well I own three of these and never touch them through the changing seasons and daylight savings time changes. Installation was simple .Programming is easy, but you must follow the instructions to the letter. Reprogramming is necessary when you change the battery. I am operating compact flourescent bulbs with these timers and have not experienced any problems. June 10, 2011
  • 2015-06-30T05:32:20.648-05:00
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