Intermatic T103 Mechanical Time Switch, Gray

The timer is as described and arrived promptly. I am not an electrician but had no problem removing the old timer mechanism from its case and installing the new timer. The old one just snaps out and the new one snaps in. Reattaching the wiring was easy. MAKE SURE YOU TURN OFF THE POWER TO YOUR BEFORE ATTEMPTING TO REMOVE YOUR OLD TIMER. It took me about 20 minutes to complete the job. Good product at very fair price.

Top notch service and good quality product

It works like it should, only thing I didn't like was the box because it's hard to open and close so I just left my old box and set the new timer part in. So far it works great!

I was able to take the circuit from the new timer and install it in the box of the previous timer, which was the same model. I did not have to remove the box of the old timer, there by avoiding that aspect of the reinstallation. The interchangeability was a welcome surprise.

I purchased this mechanical timer to replace an almost identical unit installed by a previous owner of my house. I did this because the entire mechanism can be taken out of the metal box very easily. I took the new mechanism out and put it into the old box that was still attached to the wall and I did not need to disconnect the conduit running to it. This took only a minute. I then simply had to make the connections and I was back in business. If you do not know how to wire, or how to safely work with electrical wiring, this is not the product for you.I have no idea how long the old unit was in place and I have yet to determine why it stopped working. I think that the gears came off track as the motor still runs when connected. Otherwise, I cannot make any claims as to the longevity of this unit.I will update this review if I have any issues with this product, but for now I am very happy with the product and with Amazon for having this available and for the quick and efficient delivery.

I've used this series of timers for over 20 years, both in-and-outdoors. The latest purchase is to replace a Compool pool automation system. I have a bunch of eperience with laboratory automation and I cannot get that POS to funstion properly. The pool service guys know nothing. So my habit has been when household "automation" is too expensive to upgrade, I swap-in these timers. They run a 250 gal. aquarium. They run all my outdoor lights (120v, NOT low voltage) and now they will control the pool. If I need some automation, I just have these run a raspberry pi or even just a few relays. I have never had a failure due to the timers. My sense is people are using these boxes outdoors as-is. Either buy the weatherproof version, or being cheap I will put the pool timers in one large weathproof box which simplifies mounting and wiring. The accuracy of the timer is more than adequate for anything in the house. The big box stores in my area no longer carry Intermatic and the replacement is junque.

I bought the the unit to replace the unit that had been working great for 15 years. I am an electrician so installation was short and smooth, I like how the main controller pops right out of the box. BUT!!!! The timer was running about 4 to 5 times faster than it should have (this was a direct replacement)) Since it had been wired up they wont take it back. So I had to order a new timer for the new unit. The new timer works fine but that added an additional $25 to a cheap timer/contactor. So for $100 I fixed my pool timer. Should have called an electrician, oh yeah I am one. Feel I didn't enjoy this purchase.

If the mechanism in your T103 timer breaks, this is the cheapest and easiest remedy, whether you want to replace the whole box or just what's inside. It is an exact replacement, so it is possible to save yourself a lot of time by simply removing the mechanism from the new unit and replacing the broken one (as opposed to pulling out the entire box, which is likely nailed to studs and not easy to remove, not to mention having to fish all the wires). Yes, you will have an extra box if you do this, but I'd rather have the extra box than pay $20 more for just the mechanism. In short, this unit works fine regardless of how you choose to approach it, and is the least expensive option.

This is a sturdy timer that we use to turn outdoor lights on and off around our country property. This device was easy to install, easy to set, and is quiet and reliable. Recommend.

Es un buen producto, esta funsionando muy bien.

I had an Intermatic timer that was 30 years old. It had some advanced wiring to it. I was able to swap out the timer from the old box and using the same shell put in a new timer . This left only simple wiring to connect the timer back into working order. Saved me a lot of time. Very happy with this product.

As expected it did the job-- replacing a similar model over 10 years old.

Good product