This remote operates at a frequency of 433MHz. Make sure that your old remote has 433MHz stamped on its back.
If you have two Marantec garage door openers that use the 433MHz frequency, you can control them with the M3-2423 Marantec garage door opener two button remote control. You can program it easily by following the detailed instructions that come with your order. The remote also comes with a visor clip, a battery and a programming connector. We ship the next business day, but the item is subject to availability. To find the right replacement remote, make sure the 433MHz matches the one on the back of your old remote. If it does, then the new M3-2432 Marantec is the one you need.