If you need a new digital remote control for your Marantec garage door opener that works on the 315MHz frequency, you can order the M3-3313 Marantec Three Button Key Chain Remote. This handy device has three buttons that let you operate three different openers. It also comes with a key ring clip, a battery, a programming connector, and a set of instructions. You can easily program it yourself by following the steps in the manual. To check if this remote is compatible with your opener, look for 315MHz on the back of your old remote. We offer fast shipping and a 30-day return policy.