The Liftmaster 370LM remote enables you to open up to 3 garage doors or gates. It is also possible to control your garage door using all three buttons, allowing you to open, stop, and close your garage separately with each button. The 370LM also offers you peace of mind with its rolling code system. With every button push, the code between the remote control and the receiver rotates between over 100 billion codes to help keep your home safe from thieves. This product comes with a 5 year lithium battery and is perfect for carrying in your purse, pocket, or keychain.