Keychain Remote Garage Door Opener Firefly 300Mhz IMPORTANT NOTE: The remote is older dip switch style which does not sync to a garage door. This remote only works with 10 dip switch Multi-Code models 10 Dip switch style remote operates on 300mhz frequency. Remote, keyring, &amp; Battery included. Compatible with Multi-Code receivers and transmitters. 10 dip switch 300mhz multicode compatible Keychain remote one button with 12 volt battery included.