Firefly 310LID21K garage door opener keychain remote is an 8 dip switch, 310 MHz remote that is compatible with Linear.

• 8 dip switch style 310mhz keychain remote
• Operates with Linear receivers and transmitters
• Test/operate LED
• Keychain model
• Black case
• Power: Long-life 12 V battery
• Frequency: 310 MHz
• Dip switches found in battery compartment