The Firefly 390GED21K Genie 12 Switch Compatible Remote is a handheld replacement transmitter designed to operate older Genie garage door openers and gate operators that use fixed-code 12-switch DIP programming at 390 MHz. Ideal for replacing lost or worn-out remotes, it provides reliable one-button control when matched to a compatible Genie 12-switch receiver, making it a practical choice for residential or light commercial applications where classic fixed code systems are still in service.
Operating at 390 MHz with 12-position DIP switch coding, this remote is programmed by setting its internal switches to the exact ON/OFF pattern used in your opener’s or external receiver’s DIP bank. No rolling code pairing or learn button is required. For compatibility, your system must be a Genie fixed-code model with 12 DIP switches; it will not work with Genie Intellicode I/II or other rolling-code systems, nor with 315 MHz or 433 MHz platforms. For best results, copy the DIP positions from a working transmitter or directly from the receiver and test operation at the door or gate. Always keep remotes out of reach of children and verify that the door area is clear before activating. This purpose-built, Genie 12-switch-compatible remote offers a straightforward upgrade or replacement path for legacy 390 MHz fixed-code installations.