20 Most Recent Intermatic Inc. ST01C Digital In-Wall Timer Questions & Answers

Your INTERMATIC ST01C Digital In-Wall Timer is
not compatible with a REGULAR three-way switch

((besides being a rather poor timer ( my opinion ))).

Following WIRE colors is TOTALLY INCORRECT...
(and dangerous).

The only way you can "use" this switch is to OVER-RIDE
both 3 way switches...

NEED to KNOW WHAT you are doing...!!

I would seriously recommend you consider "SMART"
switches... Check out home automation or
SMART-HOME ... Insteon... X10 or even
LEVITON's remote capable switches...

Each end of a "3-way" circuit work closely together...
are HARD-WIRED and CANNOT be easily, conveniently
or safely overridden (in my opinion).

Hope this helps...

Intermatic KM2STU 1G 1 Gang SPDT 24 Hour Mechanical Timer Amazon com

Intermatic ST01 Series Easy Setting Manual Programming Fixed Time

One (apple) possibility (ALEXA enabled devices)
Eve Light Switch Connected Wall Switch with Apple HomeKit technology for...

Another remote
(X10 technology (less proprietary & ALEXA compatible))

Hope this inspires...

Carnac the Magnificent

Intermatic Inc.... | Answered on May 28, 2018

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.
When the sun-moon symbol shows, the display also shows AM.
Press the +/- again and PM show.

So if you want Program1 to turn lights ON at dusk (PM), then your display needs to show: 1 ON PM sun-moon.
To continue setting astro, do not set hours, just press PROG button.
Then repeat the steps above until: 1 OFF AM sun-moon show on display.

Intermatic Inc.... | Answered on Dec 27, 2017

Do not go to Utilitech.com; it's a different company. It's actually at place called TheNCC and is in tiny, tiny print at the bottom of the instructions.

Instead, go to:

You should find a PDF for the product and then zoom in to be able to read the instructions. I was not able to read instructions that came in packaging.

Intermatic Inc.... | Answered on Mar 13, 2017

Open following link to see clear drawing and instructions for wiring ST01C timer.
Page also has EZ programming steps:

Red wire is capped.
Blue wire goes to Load (wire to sconces)
Black wire connects to Line wire (wire from breaker)
Green wire goes to ground.
If you are uncertain about Load and Line wires, just connect them either way, turn power ON, push on-off button, it lights don't come on, then reverse wires.
I have tested this timer, and information here is correct.
Don't forget to install CR2 battery, otherwise display will not show.

Add a comment for more free help.
Also 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.

Intermatic Inc.... | Answered on Mar 31, 2016

The programming does not work on my model TM 74 so I will be returning it to Lowe's.

Intermatic Inc.... | Answered on Dec 13, 2014

Replace CR2 battery, then reset timer.
If functionality is not restored, then replace timer:


If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Intermatic Inc.... | Answered on Aug 12, 2014



If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Intermatic Inc.... | Answered on Aug 12, 2014

Mine sometimes switches itself (!) From AUTO or PGM to SETUP. Simply use your fingernail to open top of door/switch and touch "Mode" button until it reads PGM or AUTO or MAN, as you wish.

Intermatic Inc.... | Answered on Jul 31, 2014

Reset timer by holding down on-off button then press and release small round reset button. Then release on-off button. Display should flash 12:00
This timer uses CR2 battery.
If functionality is not restored after new battery and reset, then timer has probably gone bad?
ST01 timer has 1 year warranty from intermatic.com


If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Intermatic Inc.... | Answered on Jul 28, 2014

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