Transmitter Solutions
Custom Branding

Product Images

Firefly3 390LMD21K3 keychain transmitter
Firefly3 390LMD21K3 legacy keychain transmitter image
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FIREFLY3® 390 MHz TRAFIR390LMD21K-3

1-button 390 MHz keychain transmitter compatible with Liftmaster 61LM and other Liftmaster dip-switch models, Not compatible with Security+.

Applications

Specifications

Frequency
Battery Type23A
Code Type:Fixed

Units

Dimensions1.5 (L) x 2.125 (W) x 0.375 (H) in
Weight1 oz
Operating Temperature-20°F to 85°F

Compatible With

Liftmaster® 61LM

Liftmaster® 61LM

Part #
Pricing:Contact for Pricing

Features

  • 390 MHz
  • One Button (Dark Blue)
  • Key Chain Model
  • Liftmaster 61LM Compatible
  • 2 Year Warranty
  • 9 Dip Switches

Documentation

Document type

Cutsheet

Firefly3 390LMD21K3 Cut Sheet

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