Transmitter Solutions Firefly 390LMD21K Garage Door Opener Keychain Remote

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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