Replacement for DISCONTINUED 491T / 491C Directed Electronics Remote Control Transmitter Item offered is NOT the 2-Button 491C/491T remote, which is discontinued. It is the 4-button manufacturer's recommended replacement remote for all systems that used those models. It is the ONLY remote presently made that will work with systems originally operated by the 491C/491T 1st Photo of the 4-button remote is the remote being offered - 2nd photo is of discontinued model and is for reference only. You will NOT receive this 2-button model. This 4-Button remote will work with EVERY system that came with a 491C/491T remote, so long as the system is in good working order and the programming is done properly See the complete "application guide" in the description section IF YOU ARE NOT SURE your original remote was a 491C/491T IF YOU ARE NOT SURE your original remote was a 491C/491T, you will need to locate the manufacturer's date code on the main control module (brain) of your system. YOU WILL PROBABLY BUY THE WRONG REMOTE if you don't match the date code