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Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)

Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
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View Similar / Alternative Item
North Shore Commercial Door NSCD-390CK1 Compatible RemoteNorth Shore Commercial Door NSCD-390CK1 Compatible Remote
$28.00$20.00
Item# 390LMD21K
$13.50$12.65
Availability: Usually ships the next business day
Quantity:
$13.50$12.65
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote (New Part# 390LMD21K3)
Product Description
The Firefly 390LMD21K garage door opener makes it easy to keep your remote within reach at all times. This Firefly transmitter comes on a sturdy clip-on keychain that you can keep on your house keys, your car keys or attached to your pocket or purse. Simply click the single button to open or close your garage door swiftly and smoothly.

The Firefly 390LMD21K garage door remote works with any LiftMaster receiver or transmitter, and is considered a generic version of the 61LM. To find out more about this great product, use the "Questions" feature below to get answers from our staff and other customers who own the product.
  • New Part# 390LMD21K3
  • Alternate Part# TRACOMFIR611K
  • Capable of replacing Remote Models 81LM, 51LM, 750CB, and 850CB.
  • Keychain features a simple clip-on style
  • LED lights up when testing or operating the remote
  • Blue case features smooth, rounded corners
  • Frequency of 390 MHz
  • 9 dip switches are located in the back battery compartment
  • One 12V battery required
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Ask a Question
COMMENT: Small size, so that it can be carried in a purse. by JEFFREY M 4/18/2017
COMMENT: reliable brand by SHWUYING J 2/17/2017
QUESTION: Does it work with a purple smart button? by None N 1/2/2017
STAFF ANSWER: no by Taylor M a
ANSWER: I don't know! by Laura K a
QUESTION: I have a Liftmaster garage opener with a purple smart button. Will this work or what one will? I need a small keychain type. by Travis G 3/24/2016
STAFF ANSWER: Travis you will need to the 890 Max by Taylor M a
QUESTION: How do u program this for a liftmaster? by None N 2/13/2016
STAFF ANSWER: <a href="https://sep.yimg.com/ty/cdn/yhst-16416632405890/TS-Firefly-390LMD21K.pdf?t=1574372400&#_ga=1.25171517.1472442495.1453813845" target="_blank">http://lib.store.yahoo.net/lib/yhst-16416632405890/TS-Firefly-390LMD21K.pdf#_ga=1.25171517.1472442495.1453813845</a> by Taylor M a
QUESTION: I currently am using a remote in my car, model 111663-3901. It has 9 dips. I want to have a remote that I can have in pocket. Will this remote work on my Overhead door as my current remote? by Stephen P 1/16/2016
STAFF ANSWER: This should work ! by Taylor M a
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