--- product_id: 1804729 title: "T101 24-Hour Mechanical Timer Switch, 120V SPST 40A, Indoor | Heavy-Duty Mechanical Time Switch, Indoor Metal Enclosure, Manual Override, Ideal for Lights, Pumps, Fans, and HVAC Systems" brand: "intermatic" price: "S$164" currency: SGD in_stock: true reviews_count: 13 url: https://www.desertcart.sg/products/1804729-t101-24-hour-mechanical-timer-switch-120v-spst-40a-indoor store_origin: SG region: Singapore --- # 24-hour mechanical control 40A heavy-duty load capacity 12 daily ON/OFF operations T101 24-Hour Mechanical Timer Switch, 120V SPST 40A, Indoor | Heavy-Duty Mechanical Time Switch, Indoor Metal Enclosure, Manual Override, Ideal for Lights, Pumps, Fans, and HVAC Systems **Brand:** intermatic **Price:** S$164 **Availability:** ✅ In Stock ## Summary > ⏳ Never miss a beat—power your day with precision timing! ## Quick Answers - **What is this?** T101 24-Hour Mechanical Timer Switch, 120V SPST 40A, Indoor | Heavy-Duty Mechanical Time Switch, Indoor Metal Enclosure, Manual Override, Ideal for Lights, Pumps, Fans, and HVAC Systems by intermatic - **How much does it cost?** S$164 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/1804729-t101-24-hour-mechanical-timer-switch-120v-spst-40a-indoor) ## Best For - intermatic enthusiasts ## Why This Product - Trusted intermatic brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Flexible Scheduling:** Up to 12 ON/OFF cycles daily with 1-hour minimum intervals for tailored automation. - • **Durable Metal Enclosure:** Built tough for indoor industrial, commercial, and residential use—lasting performance guaranteed. - • **Heavy-Duty 40A Capacity:** Power through demanding loads—perfect for lights, pumps, and HVAC systems. - • **Precision 24-Hour Control:** Seamlessly manage your daily schedule with reliable mechanical timing. - • **Manual Override Convenience:** Take control anytime with an easy manual override switch—no app needed. ## Overview The Intermatic T101 is a robust 24-hour mechanical timer switch designed for indoor use, supporting heavy-duty loads up to 40 amps. It offers up to 12 customizable ON/OFF operations daily with a convenient manual override and durable metal housing, making it ideal for managing lights, pumps, fans, and HVAC systems in professional and home settings. ## Description Product Description The T100 Series Mechanical Time Switch has proven it can stand the test of time. These dependable time switches can handle electrical loads up to 40 A per pole and allow for up to 12 ON/OFF operations per day. A manual override switch provides added convenience. From the Manufacturer Designed for industrial, commercial and residential applications. Highest HP ratings in the industry for loads up to 40 amps, providing direct 24 hour control of most loads. Provides 1 to 12 "On/Off" operations each day with minimum On/Off times of 1 hour. All models equipped with one "On" and one "Off" tripper. Operating Temperature Max (Degrees Celsius) = 54. ## Features - 24-HOUR MECHANICAL CONTROL - The Intermatic T101 offers direct 24-hour control for a wide range of loads, providing reliability and precision in your daily operations. - FLEXIBLE ON/OFF OPERATIONS - With the capability of up to 12 ON/OFF operations each day, and a minimum time interval of one hour, this mechanical time switch offers versatility to meet your specific scheduling needs. - CONVENIENT MANUAL OVERRIDE - The T101 features a manual override switch, adding convenience and flexibility to your control options when needed. - INCLUDED TRIPPERS - Each unit comes equipped with one ON tripper and one OFF tripper, ensuring a complete and ready-to-use package for your electrical control requirements. - ROBUST AND TIME-TESTED DESIGN - Built for industrial, commercial, and residential applications, the T100 Series Mechanical Time Switch boasts the highest HP ratings in the industry, providing enduring performance and control for loads up to 40 amps. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00002N5FN | | Best Sellers Rank | #2,762 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #3 in Wall Timer Switches | | Brand Name | Intermatic | | Color | Gray | | Customer Reviews | 4.5 4.5 out of 5 stars (13,543) 4.5 out of 5 stars | | Global Trade Identification Number | 00078275000018 | | Included Components | T101 | | Item Dimensions D X W X H | 3"D x 5"W x 7.75"H | | Item Type Name | Intermatic T101 24 Hour Dial Timer | | Manufacturer | Intermatic | | Manufacturer Part Number | GID-601501 | | Manufacturer Warranty Description | 1 year. | | Material Type | Metal | | Model Number | TMHDT101 | | Number Of Items | 1 | | Number Of Settings | 12 | | Screen Size | 8.13 inches | | Unit Count | 1 Count | | Upc | 783324975789 735090346355 078275000018 | ## Product Details - **Brand:** Intermatic - **Color:** Gray - **Material:** Metal - **Number of settings:** 12 - **Product Dimensions:** 3"D x 5"W x 7.75"H ## Images ![T101 24-Hour Mechanical Timer Switch, 120V SPST 40A, Indoor | Heavy-Duty Mechanical Time Switch, Indoor Metal Enclosure, Manual Override, Ideal for Lights, Pumps, Fans, and HVAC Systems - Image 1](https://m.media-amazon.com/images/I/81db9+5PniL.jpg) ## Available Options This product comes in different **Size, Set name** options. ## Questions & Answers **Q: My timer for my pool has died. Would this product work for an outdoor, inground pool? The 220 is what I need...** A: Absoluely, this works great for in ground pools. I bought one for my 10,000 gal pool with a 1 hp pump running on 220. excellent product. **Q: I'm replacing my pool pump timer, intermatic it tells me to use wg1573-5 what model is this?** A: This number is for the timer motor only, not the timer assembly, nor the case enclosing the assembly. This little motor is what usually goes bad. It can be replaced, but it is easier to replace the whole assembly. Model T104M is the timer assembly (includes the little motor) and Model T104P3 includes the timer assembly in a metal case. This case is not recommended for outside usage. If you want to use outside, install the Model T104M in a totally enclosed plastic case. **Q: How do you determine whether you need a 110 or 240 volt timer? I don't see any indication on the old timer.** A: The instructions show the ability to connect a 110 V pool pump BUT you need a 220 V connection from the fuse box for the timer to work. The T101 is the one needed for 110 connections. **Q: can I buy more timer clips?** A: You can buy clips separately from other vendors. Just do a search for them and it should give you several options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Right Part for my Setup and Works Great *by on Reviewed in the United States August 9, 2026* Perfect replacement. I did the research and bought the correct part. Installation was easy. I did have to extend a wire to reach the other timer and to reach the breaker. Working great so far. ### ⭐⭐⭐⭐⭐ This is a good brand. Don’t go with the cheaper one. *by on Reviewed in the United States August 2, 2026* I have bought two of these timers. And they both work great for my pool pump and vacuum pump. I bought the cheaper one for around $59 and it did not work properly. Would not turn the pump on. This is a good brand I recommend it. ### ⭐⭐⭐⭐⭐ Excellent Customer Service *by on Reviewed in the United States October 1, 2019* 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!!! ## Frequently Bought Together - Intermatic T101 24-Hour Mechanical Time Switch - Reliable Control for Various Loads, 12 ON/Off Operations - Manual Override & Included Trippers, Designed for Industrial, Commercial, Residential - 156T1978A Time Switch Trippers Replacement for Intermatic Fit T100 Series Timers 2 Pack (4 ON / 4 Off / 8 Screws) - Intermatic T104 Electromechanical Timer Switch - Proven Durability, 40A Load Capacity, Versatile Scheduling, 1-12 Cycles Per Day - Manual Override, Tripper Included for Reliable Time-Based Control --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/1804729-t101-24-hour-mechanical-timer-switch-120v-spst-40a-indoor](https://www.desertcart.sg/products/1804729-t101-24-hour-mechanical-timer-switch-120v-spst-40a-indoor) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-17*