Intermatic T104M Mechanical Time Switch Mechanism Only

I can’t believe that I ordered this at 9am on a Holliday weekend. It was delivered by 1pm and installed and running by 2pm. Very easy to install. Remember to take pictures of the original so you don’t get the wiring confused, and to turn off the breakers. My timer was working, but it wouldn’t shut off. So many times we would kick it on and forget to shut it off. Having a working timer will save me money in the future. First pic is old timer box, second is the new mechanical timer installed inside old box.

This is going to be an unusual review of this item. First off, I purchased this as an exact replacement of the original pool timer that was probably there since the pool was built. We bought this home from a previous owner 14 years ago and though I don't know exactly when the pool was built originally, I have every reason to believe the old part was the original timer. That says a lot about its quality and reliability. But it did ultimately stopped working. So, the new replacement came. It is literally a snap to remove the old one and install the new one (exact same model). The snap/clip that holds it in place is a one handed operation in less time that it would take to exhale and inhale a single breath. By the way, as a tip, after making sure the power is completely turned off from the breaker, take a photo of the original wiring arrangements before removing. One Philips screw driver, and off with the wires. Putting them back in took just a few minutes. The pump turned on. And this is where I pivot to customer service. There was something wrong with how the timer dial indicator was moving. The clock was running counter clockwise. I called the manufacturer's product support who advised that I return the item because it had to be defective for the clock to behave that way. I contacted Amazon thru the usual return order process (all done online). A quick response gave instructions on how and where to return it (Kohl's nearby will repack and shipped the old item for free). A replacement was expected to be shipped in a little over a week. Meanwhile, the pool pump was running and I thought I'd keep it running and will manually shut it off and back on as I had been doing the past two weeks anyhow (with the old timer). Well, lo and behold, by early evening it turned off! That led me to re-examine or re-analyze the timer dial movement. I was mistaken. I totally misread how it was moving. I thought I'd wait till the following morning to call off the shipment of the replacement item and it would confirm by morning, for sure, if the pump will automatically turn on. It id!! Early his morning I got an email from Amazon that there was good news. The replacement will get here in three days. Oh no! I didn't expect Amazon to ship the item until they got the old one back. So now, egg on my face, I went to cancel the item. This review is about two things. This timer is one solid performer. Remember it took all those many years (power outages, hurricanes, one pump change) when it finally gave up; though not entirely. The auto timer did fail but I was able to manually make it work. The manufacturer's product support was responsive (although the product turned out to be all right). Then, this proves once again that Amazon has no equal. Bravo to customer support!!!

This was a perfect replacement for my old, failed mechanism. Installation could not have been easier.

This is an easy way to fix your broken timer. The installation is easy and it works very well.

Good product, reliable

We're in the lightning capital of the country so we often get calls from clients whose digital timers are fried. We recommend these mechanical timers and they last and last. Easy to install and super simple for the clients to adjust their times by themselves. We never go wrong with Intermatic Timers.

Why did you pick this product vs others?: This was a perfect replacement for my old Intermatic timer. The old one has been in use for at least 10 years, and finally gave up. It was used to turn the pool lights on and off. The pump is on a separate timer. It was a super easy swap out. I unscrewed the wires, making sure to be able to identify them when I reconnected them to the new timer. The old one pops out by pressing a retaining tab inside the enclosure. The new one slides right into place. I reconnected the wires and was back in business in 10 minutes. It is way easier to replace just the internals instead of the entire box. I expect this one will last another 10 years. Intermatic has a great reputation for quality and longevity. Pro tip...make sure you buy the correct timer for the voltage you are using. They come in 240 volt and 120 models. Make sure you order the right voltage for your application...I highly recommend this as a great replacement timer.

My pool timer stopped turning the pump on and off as it usually does. Sounds familiar? At first I wondered if it was the trippers simply worn out on the timer and not the entire device, since I could feel the gears on the back of the dial moving with my fingers. I looked at the on and off trippers on the timer and they seemed fine so I knew it was time to replace mine, which I believe was the original of this 20 years old house. I was able to pull the device out easily and saw the T1202m1 stamped on the back of the device panel. Upon searching on Amazon, this came up and decided to try it. I did not need the gray metal box but the device simply slides out. After turning the boxes breaker off, I rewired the new device exactly as my old one was wired. You can see from the picture that they look nearly identical. Ill say that the new device didn't necessarily snap into my old panels grove perfectly, but it's stable and secure and fine. I powered it on and it's worked great. No issues and I'd say installing took 10 - 15 mins tops. I'm not an electrician, just a dad that wanted to save some money on a DIY job at home. Seems great 👍.

A direct no-trouble replacement in a unit that died maybe a decade after installation. This timer works non-stop for half of the year and is used for a 220v pool motor. It’s been more than a year that it’s in place and seems ready for many more.

Thanks to time-of-use electricity pricing, it's no longer reasonable or affordable to run the pool pump all day to keep the water circulated, clear, and algae free. No, it necessitates an evening run to the pool shed to fire up the pump for 12 glorious hours of lowest-rate power, and if you miss the alarm, 2-4 more hours of much more expensive power. Plus, I have other urgent priorities when I first wake up, and the sound of running water ensures that first things happen first. Since I prefer dry feet and not much moving about when I first wake, heading to the pool shed through dewy grass to turn off the pump and keep some cash in my pocket simply doesn't appeal to me. Enter the timer. It's quite challenging to find a 240v timer here in North America, but between Intermatic making one, Amazon selling it, and FedEx delivering to my door, it has been accomplished! The wiring diagram is a little difficult to comprehend but once you understand what it's showing you, it's simple and straightforward to hook up. The weatherproof box means it can be mounted outside but my handy pool shed ensures both my pump and timer are dry, save perhaps catastrophic failure of pump seals. As an added bonus, the timer keeps time. The timer on/off adjusters are a little finicky to use, but that may have more to do with my sausage-sized fingers. If, like me, your hands and fingers are large, you may want a 10 year old around to help put them on. If you can't find one, I hear there are loads at your local skate park. In a nutshell, I'm banking on nothing short of a direct lightning strike will cause me to have to make a dewy run to the pool shed ever again.

Fonctionne très bien

funcionó de maravilla y quedó al cien

Have this timer hooked up for a wintertime automotive block heater outlet. Keeps time very well and works great. I opted for this particular timer due to the "Intermatic" brand name which is tried and true. I was looking at the digital timers on Amazon but chose this mechanical timer mostly due to the fact that we have various numerable power outages and interruptions because of our rural location. Going outside to mess with a digital timer and reset everything at -30c pushing buttons and going through various menus? Screw that! A simple spin of the timer dial on this timer to reset to the correct time and it's good to go again.