Transmitter Solutions Firefly 390LMD21K3 Keychain Remote (390MHz)

Firefly Gate and Garage Door Remote Control Model No. 390LMD21K SOLD IN QUANTITIES OF 10 ONLY The Transmitter Solutions Firefly3 transmitter is a very small (1 1/2" x 2 1/8" x 3/8") keychain style wireless transmitter operating at 390 Mhz. The Firefly achieves its small size by uing state of the art, surface mount components. It has been designed for use with and is compatible with all Liftmaster 9 dip-swich receivers operating at 390 Mhz. Features Liftmaster, sears, chamberlain compatible with ALL 61LM remotes!  9 dip switch style 390mhz keychain remote 61LM LIFTMASTER only remotes with dip switches from 1984 to 1993 Operates with LiftMaster receivers and transmitters Test/operate LED Keychain model Blue case Power: Long-life 12 V battery Frequency: 390 MHz Dip switches found in battery compartment  Download Information: Specification Sheet Installation / User Manual