Question about Intermatic Inc. ST01C Digital In-Wall Timer

1 Answer

My timer is set on auto-from dusk to dawn. Comes on every night but does not turn off in the morning. This is the 3rd one we have tried and all do the same thing. Had electrician install, so think its installed properly

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1 Answer

You posted under Intermatic ST01C battery operated timer.
Battery operated timers cannot be exposed to freezing temperatures.
Answer below fits ST01C timer, and other similar timers.

If timer worked at one time, then timer is installed correctly. This is true for all timers.
Most in-wall timers have 1 year limited warranty.

ST01C uses CR2 battery that needs to be replaced periodically.
ST01C manual says to reset timer as last-step troubleshoot.
Programming must be entered again afterwards.
Open following link for ez programming steps and battery info.

If you are having a problem, then buy Utilitec LW60419-0192773 at Lowes.
You can install yourself using information on following link:
Utilitec does not have battery and can be exposed to cold.

Another dawn-dusk Timer is Honeywell Aube T1033
Aube is also battery operated like ST01C and it cannot be exposed to freezing temperatures.

Sylvania SA170 offers ez-set zip code feature for dawn-dusk operation.
You can install yourself using information on following link
Sylvania does not have a battery

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on May 22, 2011

  • Anonymous Jun 16, 2011

    Thank you for taking time to downvote the answer. If you add a comment and say what timer you have, that could be important clue for getting information, especially if timer has battery. If timer has a battery, then replace it with one of the timers suggested that doesn't have a battery.



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    Set for local dusk-dawn. Comes on at dusk does not go off at dawn

    The photo electric sensor is not working or the electronics connected to it are not responding. Either way the timer is only good for turning on.

    Sep 10, 2015 | Hardware & Accessories

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    How do i set the timer for a GE emp700ul-pc, cat#15147

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    1-9= # of hours it stays on after dusk
    D= on from dusk to dawn
    R= random hours is stays on after dusk each night

    Dec 04, 2012 | GE 15107 24Hour Yard Stake Timer

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    I have an Intermatic ST01C timer. Works great. I just noticed that I cannot set the DUSK time past 9:11pm. Any minute before that is fine such as 9:10pm but I wanted to set it to about 9:15pm. It has...

    Call Intermatic.
    You can set dawn-dusk parameters a bit longer or shorter than pre-programmed dawn-dusk times.
    There is a limit to how many minutes you can add or subtract to pre-programmed times, and I'm not sure how many minutes exactly.
    All astronomic timers have limited number of additional minutes, and folks write to fixya occasionally about wanting to extend the limit. But there is no work-around unless you choose to set fixed on-off times instead of using astronomic feature.

    If timer begins to malfunction, you reset timer and change CR2 battery, and then reprogram the timer.
    Instruction manual has troubleshoot checklist.
    Timer comes with 1 year limited warranty.
    Open following links for ez instructions, wiring diagrams, and battery illustration:

    Jul 29, 2011 | Intermatic Inc. ST01C Digital In-Wall...

    1 Answer

    Woods vacation villa 2 room tent manual needed..Please help

    Woods 83660 security timer appears to be same/similar as Coleman 2001/Woods 49647
    Instructions: Timer turns ON automatically at dusk
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    Jul 10, 2011 | Woods INDUSTRIES 83660 OUTDOOR SECURITY...

    1 Answer

    I want to use just the pm of the timer....for xmas lights....I see how the arrowis to be put on the 5 .....thats when i want them to come on....and 9 later in the evening....where do i put the arrow for...

    You posted under The Woods/Coleman 2001 timer.
    This is same as Westek TM14DOLB, Sylvania SA200 and similar to GE 57696.

    If this is not your timer, add a comment with description and brand of timer.
    Also see Woods timers and manuals to help identify your timer.

    This particular timer turns ON automatically at dusk.
    And then you set the dial for other options as follows.
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    Dial set to Dawn-dusk > timer turns OFF at dawn.

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    That sounds like the Woods 17321 Dusk-to-Dawn yard stake
    Product image:


    If this is not your timer, check following page:

    Yard stake control outlets, and turns ON automatically at Dusk
    Rotate dial to set options:
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    Rotate to Dusk-dawn > outlets on at dusk and off at dawn
    Rotate to 2 4 6 8 > outlets on at dusk and off 2 4 6 8 hours later

    Dec 05, 2010 | Woods Outdoor Lighting Timer

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    We need clear instructions for setting the timer

    Woods makes several outdoor timers:

    Image that shows with this post is Woods model #49647.
    Below are instructions for #49647 timer.

    If your timer is different, add a comment with model number and I'll post instructions for that timer.

    Woods model #49647 is outdoor timer with photoelectric control that turns timer ON at dusk.
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    Rotate dial to make timer selection.
    OFF = timer is OFF full-time until you change dial.
    ON = timer is ON full-time until you change dial.
    Dusk-Dawn = timer turns ON at dusk and OFF at dawn
    2, 4, 6, 8 hours = timer turns ON at dusk, and turns OFF 2, 4, 6, or 8 hours later.

    Nov 26, 2010 | Woods Outdoor Lighting Timer

    1 Answer

    How to set utilitech wall timer for dusk/dawn settings

    The Utilitec 0192773 timer has astro dusk-to-dawn functions.

    The manual is very unclear at the exact point you need it to say how to set dusk-to-dawn.

    The following page has the manual, with explanation how to find the astro dawn-to-dusk setting

    When you are programming the timer, press TIME button and hours start flashing.
    Press the +/- button ... the trick is to keep pushing the +/- button until it finally gets to astro, and the sun-moon symbol shows on display.
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    So if you want Program1 to turn lights ON at dusk (PM), then your display needs to show: 1 ON PM sun-moon.
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    Then repeat the steps above until: 1 OFF AM sun-moon show on display.

    Nov 08, 2010 | Intermatic Inc. ST01C Digital In-Wall...

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