Skip to content
Shop Your Local Store Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted Authentic Brands

Intermatic Indoor 24 Hour Mechanical Timer 120 V Gray

Set it once and your lights follow the same on/off routine every day, no rewiring smarts required.
Intermatic MPN T101D89 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $71.99. Our online price is $79.99.
$79.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

The Intermatic T101D89 is a hardwired, in-wall mechanical timer that runs your lights on a 24-hour schedule without you touching a switch. It's built for indoor use and handles CFL, LED, and incandescent bulbs, so it works with whatever's already in your fixtures. Set it once and let it repeat the same on/off cycle every day - useful for porch lights, indoor lamps on timers, or any fixture you want running on a routine.

  • Product Type: 24 Hour Mechanical Timer
  • Voltage: 120V, 3 Watts
  • Application: CFL, LED and Incandescent
  • UL Listed and CSA Listed
  • Indoor use only
  • 1 year warranty

The Details Specifications

Brand Intermatic
UPC 078275000018
Case Pack Quantity 3 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 8 × 5 × 3
Weight 3 lbs
Country of Origin MEXICO
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to open the other tab. Everybody does. We'd rather say so than pretend otherwise — so open it. We'll wait.

When you're over there, check four things 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

We're not always the cheapest.

Sometimes you'll find it for less. Sometimes you'll find it for more. On a lot of brands the number is identical everywhere it's sold legitimately — the manufacturer sets a minimum advertised price and every authorized dealer holds it. When a price sits well under that, it's worth asking why before it's worth celebrating.

How pricing actually works
Authorized dealer · Intermatic

Or skip both tabs and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare