Liftmaster 373LM three-button garage door remote

Liftmaster

373LM Three-Button Garage Door Remote

Three-channel 315 MHz Security+ visor transmitter with Enhanced Radio Technology (ERT). Operates three separate doors, three openers, or any mix of doors and gates from one remote. Pairs with any Liftmaster, Chamberlain, or Sears Craftsman opener that has a purple learn button.

$24.95 ● In stock — ships next business day
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🛟 Free technical support 📄 Programming & FAQ
  • ModelLiftmaster 373LM
  • Frequency315 MHz · over 1 billion rolling codes
  • CompatibilitySecurity+ openers (purple learn button)
  • Battery3 V lithium · 5-year typical life
  • FCC IDHBW1573
  • Channels3 independent buttons

In the box

  • Liftmaster 373LM transmitter
  • Directional visor clip
  • 5-year 3 V lithium battery (installed)
  • Programming & instruction manual

Compatibility

Confirmed-compatible openers, receivers, and the older remotes this part replaces. If your model isn't listed, send us a photo and we'll verify before you buy.

Liftmaster openers

3110 3220 3245 3255 3265 3280 3500 3575 3585 3595 1345 1346 1355 1356 ATS2113X HCT501130 LGO50113O LGO50113L LGO50113R

Security+ receivers

335LM 412HM 535LM 635LM

Replaces these remotes

Liftmaster 370LM 371LM (1-button) 372LM (2-button) 371LMC 372LMC 373LMC Chamberlain 950CB 953CB 956D

Same internal hardware as the 371LM and 372LM, just with three buttons. If you only need two channels, the cheaper 372LM works just as well.

Programming the 373LM

Each button on the 373LM pairs independently — repeat the procedure once per button to activate three different doors or gates.

  1. Press the purple "learn" button on the side of the first opener's motor unit. The indicator light stays on for 30 seconds.
  2. Within 30 seconds, press and hold one button on the 373LM until the motor light blinks twice.
  3. Repeat steps 1–2 at each subsequent opener using a different button on the 373LM.

Each Security+ opener can store up to 8 button-pairings — adding a 9th will erase the oldest. Each button on the 373LM counts as one pairing per opener.

What customers say

★★★★★

I have a main garage, a workshop, and an exterior gate. Three openers, three buttons, one remote. Exactly what I wanted.

Theresa Kowalewski · Pennsylvania

★★★★★

Texdoor walked me through pairing on the phone — done in five minutes. Solid build quality.

Marcus Tindale · Virginia