ACT-34B Linear 4-Button Keychain Remote
Ability to open and close up to 4 garage doors with one remote. With quick-disconnect key ring. Provides ability to open up to 4 doors. Utilizes MegaCode format, which means each transmitter is preprogrammed with over 1,000,000 codes, virtually eliminating the possibility of code duplication. Lithium batteries with a five-year service life included.