If you have an older garage door that is only operated by a remote you must.
Marantec garage door code change.
Note you need to know the existing 4 digit pin code to make these changes.
What do i have to do to make my garage safe again.
Usually a bar code number.
Facing the back of the garage door operator the serial number can be found the right side of the chassis.
Usually a bar code number.
The pin code on this device can be changed by following a few simple instructions.
My hand transmitter has been lost or stolen.
Newer garage door openers have a keypad in addition to the remote which makes it slightly easier to change the code.
For marantec eos m4500e m4700e and m4900e garage door openers.
Here are the steps you need to take to change the 4 digit pin code on your marantec m3 631 wireless keyless enty.