This is a 433MHz remote. Note that 433MHz is stamped on the back of your old remote.
The M3-2423 Marantec garage door opener two button remote control can control two Marantec garage door openers that use the 433MHz frequency. Programming is simple using the detail instructions included with your order. This remote includes a visor clip, battery and programming connector with instructions.
When you match the 433MHz on the back of your old remote the new M3-2432 Marantec will be the right replacement remote.
Ships the Next Business Day.