Intermatic ST01AC Heavy Duty In-Wall Timer with Astronomic Feature, Almond

by Intermatic

Product Description

From the Manufacturer

This Intermatic heavy duty in-wall timer with astronomic features has multiple uses to meet all your needs. You can set it one time and not need to set it again. It follows daily changes in the sunrise/sunset times. It can be used for single pole and three-way applications up to 100 Feet away. It controls lighting which includes fluorescent and heavy duty loads such as fans and appliances. It has up to 6 On/Off settings per 7-day period for a total of 42 settings per week. It has an easy to set 6 button program. Also included is an LCD digital clock and readout, battery backup and manual override feature.

Product Description

Sold as each. Same settings Monday through Friday, Saturday & Sunday. All 7 days of the week or individual daily settings. Set it once and never set it again. Sunrise/sunset times. Up to 6 on/off settings per 7-day period a total of 42 on/42 off settings per week. To the minute setting accuracy. LCD digital clock and readout. Battery backup. Manual override feature. Almond color . Manufacturer number: ST01AC. SKU #: 3239076. Country of origin: China. Distributed by Intermatic, Inc.

Product Details

• Shipping Weight: 8 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000XOH2F4
• Item model number: ST01AC
• Average Customer Review: 4.0 out of 5 stars  See all reviews (74 customer reviews)
• Amazon Best Sellers Rank: #7,444 in Home Improvement (See Top 100 in Home Improvement)
  • #40 in Home Improvement > Electrical > Wall Plates > Switch Plates
  • #47 in Home Improvement > Electrical > Timers
  • #64 in Home Improvement > Lamps & Light Fixtures > Lighting Accessories

Customer Reviews

Most Helpful Customer Reviews

27 of 29 people found the following review helpful:

3.0 out of 5 stars Wonderful but unreliable, October 24, 2009

By 

Reid Branson (Seattle, WA United States) - See all my reviews
(REAL NAME)   

This review is from: Intermatic ST01AC Heavy Duty In-Wall Timer with Astronomic Feature, Almond (Tools & Home Improvement)

A rather ambiguous title for this review, but this timer has earned it. Overall, this is a delightful product, easy to install (don't believe the electrician who reviewed it), with a great, efficient program that changes dawn and dusk times automatically and even adjusts for daylight savings time.

However, as many of the reviews state, it is not the most reliable of switches. I have been using these for over five years, and sometimes a switch will last two or even three years, and other times for only a few months before reverting to a "No Op" mode, or back to the original unprogrammed mode for no perceivable reason. Of course, after a few months, no one will take the switch back. It also has a rather odd battery that is not widely available.

Unfortunately, I am rather stuck if I want this kind of timer, because the Aube timers (more reliable and easier to program, according to reviews) all require a white neutral wire to operate. Heck, my house's wiring is so old, they hadn't even heard of ground wires when it was installed. As far as I can tell, the Aube and the Intermatic are the only players out there. I would even be willing to pay a premium price for a timer that could be installed in my house and worked reliably for several years.

The irony is that, after writing this review, I will probably order a few more of these. I love the features of this switch enough to pay the price, as frustrating as I find the failures.

27 of 29 people found the following review helpful:

5.0 out of 5 stars In wall timer works great, May 5, 2009

By 

ToolDieGuy (South Central PA) - See all my reviews

Amazon Verified Purchase

This review is from: Intermatic ST01AC Heavy Duty In-Wall Timer with Astronomic Feature, Almond (Tools & Home Improvement)

Purchased ST01AC for the porch light and it works great. Instructions are good, easy to install and program. Even comes with a quick program instruction sheet so you can have it working in minutes. I replaced a single pole switch with it but it can be used with a 3 way switch also. Can be set for the new DST and can even be adjusted. i.e.: I set it to come on at Dusk but I advanced the sunset time 15 minuets so it comes on 15 minuets after sunset (saves about 2 hrs. burn time a week) then turn off at a certain time rather than burn all night and turn off at sunrise, which it can also do. Overall a good switch for the money, I would buy another one and I just might for the driveway lights.

14 of 14 people found the following review helpful:

5.0 out of 5 stars Intermatic ST01AC, November 10, 2009

By 

R. Walde "RobW" (United States of America) - See all my reviews
(REAL NAME)   

This review is from: Intermatic ST01AC Heavy Duty In-Wall Timer with Astronomic Feature, Almond (Tools & Home Improvement)

This is the absolute best in-wall timer I have ever seen. It has an excellent dusk-on/dawn-off feature that changes with the calendar. The randomization feature is an added bonus.

This is their heavy-duty timer, so it easily works with compact fluorescent lights.

It was easy to install, supports integration with a secondary switch (3-way), and was easy to program. While the display was a little small, and therefore a little difficult to read, it is not something that needs to be read every day.

To date, I have not been able to find its equal.

The three units I have installed are working great, and have been doing so for years.

I noticed another reviewer indicated the unit does not have the Underwriters Laboratories (UL) marking; however, it does have the CSA International marking of "CSA" with a "C" and a "US. This web page has information about this marking: http://www.globalspec.com/reference/3297/Underwriters-Laboratories-UL-Marks

A call to my local electrical code enforcement agency told me that as long as the unit was marked with "CSA" and "US", it was fine.