Transmitter Solutions Firefly 390GED21K Garage Door Opener Key Chain Sized Remote

Set the twelve-digit toggle code switch to match the code set from another functioning transmitter. Access to the FireflyTM toggle code switch is achieved by removal of the back cover and battery (if necessary). Move switches using a small pointed object, such as a paper clip, gently switching the small switches to either the ON or OFF position. (In detail below, switches 2, 4, 7 and 9 are in the ON position. If your original transmitter had punch-out keys instead of switches, then set the switches in your new transmitter to the OFF position for the keys that were punched out.) When complete, reinstall battery and replace back cover inserting bottom clip into front groove, then replace and tighten screw.

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