Marantec Digital 321 433.92Mhz Garage Door/Gate Remote Control Duplicator

Copy method

Step 1 -delete the existing code  of our remote duplicator

1)Click and Hold Lock(A) and Unlock(B) buttons together - Led will flash 3 times
2)Keep holding lock (A)button and release unlock(B) button
3)Keep holding lock(A) button and push unlock (B)button 3 times, Led will start flashing Non-stop

Step 2 -  clone your original remote

1)Put both remotes Into back to Back position. Make sure they have direct contact
2)Click and hold 1 button on your original remote and 1 button on your clone remote. Keep holding until led will  make  2 blinks then  3 blinks then goes into Steady and you have successfully cloned. ( the left keys follow the same above operation)

If for some reason the clone does not go further then 2 blinks , it means the signal does not go through, please shift the remote slowly up and down until you get the point where it will go through.
 

Step 3. Resume the previous code of our remote duplicator

If you carelessly delete the code of remote duplicator, how to do get the memory?

Just follow the bellows :

Press keys C (light) and D(mute) at the same time, until the LED keeps flashing quickly.

Note: 2-key remote duplicator does not have this function.