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Intermatic Indoor and Outdoor Mechanical Timer Switch 120 V Gray

Set your schedule once and this timer handles the on/off switching for you, indoors or out, with up to 24 cycles a day.
Intermatic MPN T101RD89 In Stock & Ready to Ship
$119.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

The Intermatic T101RD89 installs directly into a standard wall box and takes over the on/off duties for whatever 120-volt fixture or load it's wired to. Its mechanical dial supports up to 24 cycles a day, so you can stagger multiple on and off times instead of relying on one straight run of power. That makes it a practical fit for porch lights, yard lighting, pumps, or any load you want running on a set schedule without remembering to flip a switch.

Rated for both indoor and outdoor installations, this timer switch holds up to everyday household use as well as exterior exposure. It carries UL and CSA listings, comes in a gray finish that blends into most electrical setups, and is backed by Intermatic's one-year warranty.

  • Product Type: Mechanical Timer Switch
  • Programmable: Yes, up to 24 cycles per day
  • Voltage: 120V, 3W
  • Rated for Indoor and Outdoor use
  • UL Listed and CSA Listed
  • 1-year manufacturer warranty

The Details Specifications

Brand Intermatic
Model / MPN T101RD89
UPC 078275000056
Weight 4 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Intermatic. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Intermatic

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