This 12V battery-operated garage door transmitter is easily programmed, and capable of operating four openers. For safe transmission this transmitter uses a rolling code system that manages the commands in a completely secure way and prevents any type of external violation. When a transmitter key is pressed the command is sent to the control unit with a different code each time, identifiable only by the receiver and accepted only once. The algorithm generated then prevents the reproduction of the code. Its ergonomic has been optimized for maximum range. This 4-button garage remote is suitable for use with our Franklin Autoswing Opener.