Question about Intermatic Inc. EJ500C Digital Wall Switch Timer - Self-Adjusting Feature

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Need a faceplate for the timer

Am having a hard time to replace the wall faceplate after painting my foyer. I have an Intermatic timer for my outside lights and a regular single light switch for the foyer on the wall. (It used to be a regular double faceplate before the timer was installed. Can you assist with locating such a faceplate? Thank you.

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  • Joel Wiedeman May 11, 2010

    Have you tried a 2 gang decora(gfci) and switch plate? I am not for certain if thh size of the dimmer and a GFCI outlet are the same.

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This is a common item. I would try a home depot or lowes first then an electrical supply house. or go on line to intermatic.com

Posted on Jan 21, 2009

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I need a manual for wired in timer by time master


1) Time master is sometimes the same as Intermatic EJ351:
Copy following link to identify timer:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html

2) Add comment and describe timer in detail, and/or include photo of timer so expert can identify timer.

Dec 13, 2012 | Hardware & Accessories

1 Answer

Just moved into a home with the Intermatic EJ500C Indoor Digital Wall Timer. Can you help us program this or disconnect this. We would like to turn on our outside lights.


If the timer is setup, you can press the MODE button until it shown MAN.
Press on the door of the switch timer for on & off.
You can printed a pdf manual at this site.
Click on English under Instruction Manuals
Also there is an Easy Set Instructions under Supporting Documentation.

http://www.intermatic.com/products/timers/consumer%20indoor%20timers/in-wall%20timers/ej500c.aspx

Dec 28, 2010 | Intermatic Inc. EJ500C Digital Wall Switch...

1 Answer

My wall timer controls an outside lamp with an outlet...when I plug in a timer for my outside lights,the switch turns off after blinking a few times....this does not happen when I plug in the out side...


If you have a battery operated timer like Intermatic ST01C, it may not operate another timer.
The ST01C will not operate circuits farther away than 100 feet, or operate when wires are located underground. Sounds peculiar doesn't it.
I assume these parameters are because of how the battery interacts with electronics inside the timer.
On the other hand, maybe your battery is getting weak.

http://waterheatertimer.org/Intermatic-st01c.pdf
The manual shows incandescent, fluorescent, motors and DC loads.
But manual doesn't specifically include or exclude other electronic devices that might put electronic feedback on the line.

I'll run a test on the ST01C next couple days, and post result on this thread.

Dec 13, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

The wall timer to my outside lights says "noop"


noop means no operation.
This usually shows on older timer.
You posted under Intermatic ST01C.
Other have written to fixya with same symptoms.

CR2 battery might be bad. Replace battery.
Replace battery quickly and current time remains in memory.
Battery out of timer longer than 30 seconds, then current time and day disappear.
Programming remains inside timer forever with or without battery until timer is reset.
Others report they changed battery and timer never came back to life afterward.
http://waterheatertimer.org/ST01C-program.html#battery

Manual troubleshoot section also suggests resetting timer, and then re-programming.
Manual:
http://waterheatertimer.org/Intermatic-st01c.pdf
To reset timer, hold down ON-OFF button and push small round reset button with paper clip.
Push reset for 3 seconds and release.
Keep holding down ON-OFF until INIT shows on display.
Release ON-OFF and wait for display to show.
If display never shows, then battery is dead or timer is bad.
ST01C comes with 1 year limited warranty.

Advantage of Intermatic battery operated timer is simple wiring, plus astronomic function (dawn-dusk).
All in-wall timers have advantages and disadvantages.

Nextag shows new ST01C sellers
http://www.nextag.com/intermatic-st01c/products-html?nxtg=90ff0a280507-C4F7FB4C58223A3F
Page also shows Intermatic EI600 astronomic timer that comes with 5 year limited warranty

Nov 29, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

Yes i have an intermatic timer for my outside lights mounted on my wall inside. it seemed to have stopped working. nothing is on display and i changed the battery


If you have a battery-operated Intermatic timer, then it is the ST01C or EJ500.
The advantage of the battery is simple wiring when you replace a light switch.

http://waterheatertimer.org/Intermatic-st01c.pdf

http://waterheatertimer.org/Intermatic-ej500c-manual.pdf

Both of these timers have troubleshooting in their manuals.
Both timers come with a 1 year warranty.

I have tested the wiring, operation and programming of the Intermatic timers and many other in-wall timers.
If the display does not light up on ST01C or EJ500, then the battery is the only reason.
If the battery is not working, then the timer is broken.
You might try cleaning the battery terminals and connectors located inside the pull-out tray.
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These small electrical devices do not have repair parts.
When the timer goes bad, you buy a replacement timer.


You can buy another Intermatic battery-operated timer and keep the simple wiring:
http://www.aplussupply.com/intermatic/timer.htm

You can also buy Aube T-1034 rechargeable-battery-operated timer.
The T-1034 is strictly sunrise-sunset.
The T-1070 is sunrise-sunset -and/or- multi-day programs

The page below explains the Aube
http://waterheatertimer.org/Aube-timers.html

The links below sell the Aube
http://michaelselectric.com/catalog/index.php?manufacturers_id=60
http://www.amazon.com/Aube-Honeywell-TI070-3W-Switch-Programmable/dp/B001QFZ404

T-1034 and T-1070 wiring is slightly different than Intermatic, and you can add a comment and I will help you with any wiring question.

Nov 02, 2010 | Intermatic Hardware & Accessories

1 Answer

I bought Utilitech #0141224 7 day digital in wall timer. I have just 2 wires at the junction box both of which are painted over but assume one could be black and other white. The 7 day digital timer...


If your box contains 2 and only 2 wires, then the Utilitec timer will not work.
You need the Intermatic ST01C or EJ500 timers that operate with a battery.

I have tested the Intermatic and Utilitec timers:
http://waterheatertimer.org/Program-wire-Utilitec-0141224.html
http://waterheatertimer.org/ST01C-program.html#wire
Do not connect white and red wires together on any timer, but thank you for solving the problem why lights blink when connecting timers.

Now lets look at your wires.
Scrape paint off the wires so you can identify white and black.
According to your information, the black wire inside box will connect to timer-black wire.
The red wire always goes to Load (your light, fan, motor)
The white wire is necessary to complete a circuit so the clock inside timer will operate.
The timer has a clock just like your alarm clock, and it needs to connect back to neutral busbar in breaker box.
This is why the battery-operated timers will work with two wires, the clock runs on battery.
The Utilitec timer-white wire is the wire that goes to Neutral
The timer-white wire is supposed to connect to the other white wires that are twisted together and covered with a wire nut ... but some boxes do not have this neutral wire
To work-around, the timer-white wire can also connect to a bare ground wire.
The bare ground wire also connects to Neutral busbar in breaker box

If you do not have a neutral or ground wire as described above, then you need the battery-powered ST01C or EJ500 Intermatic timers.
See if you can pull some more of the wire into your box ... there might be a ground wire that was cut off and pulling more wire might reveal a ground wire. This will salvage the project.
Aplus is one of many places that sell the Intermatic timer
http://www.aplussupply.com/intermatic/timer.htm

For more about electric wiring:
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/B220C.html

Oct 23, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

Intermatic ST01C is a wall timer for my outside lights. The screen flashes "lobAt" and will not operate properly. I have replaced the batteries 3 times, and no result in stopping the signal. help please


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http://waterheatertimer.org/Intermatic-st01c.pdf

1) Manual shows troubleshooting steps. Since ST01C is battery operated, it will not work on loads farther than 100 feet away. If a wire is buried underground, this can interfere with operation. Other electrical devices can interfere with operation. Check for interference issues.

2) Try reprogramming timer
To program the ST01C:
http://waterheatertimer.org/ST01C-program.html

3) ST01C has 1 year warranty + troubleshooting steps in manual, implying short life expectancy. Similar EJ500 has troubleshooting + 1 year warranty. Similar Intermatic EI600 battery-powered has troubleshooting + 5 year warranty. Each offers 40 programs per week.

3) Other in-wall programmable timers offer 7 on and 7 off events per week. Clock operates on 120V instead of battery. Ttroubleshooting is: reprogram.
http://waterheatertimer.org/Programmable.html#progr

Aug 28, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

Remove Intermatic 60 min. wall timer face plate only from wall


That knob should just pull straight off. Check to make sure there isn't a tiny set screw on the side, but otherwise you can pull it off and remove the cover plate.

Jan 23, 2009 | Intermatic & Indoor/Outdoor Rain Tight...

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