1pcs Clone Marantec Digital 302 433 Mhz D302 304 313 Comfort 220 Comfort 250 252 270 AZ021 64176 Garage Door Remote Control Self Copying Marantec 433.92MHz Remote Control Operating Frequency: 433MHz, 433.92MHz. Coding Type: Self Copying Code: Fixed Code Buttons: 2 or 4 Rated Voltage: CR2032/12V 27A Battery (Included). 433 Marantec Digital 231 433 Marantec Digital 232 433 Special Reminder: Make sure your remote control is in the compatibility list. How to Program Face to Face Copy your original remote Steps: 1: Clear the history code in the duplicator 1: Press buttons A and B continuously until the LED flashes 3 times 2. Release button B (keep pressing button A), then slowly press button B 3 times, the LED flashes 3. Release button A, the code clearing is completed. Step 2, Copy the code from the original transmitter 1. Put the duplicator next to the original transmitter, as close as possible. 2. Press and hold button A of the original transmitter, then press and hold button A of the duplicator until you see the LED of the duplicator flashes 3. Release both buttons, the code copying is completed, copy the other buttons in the same way. Duplicate your existing remote so that you always have a backup: 1. Car central locking system 2. Garage door 3. Electronic door 4. Appliances/home automation, such as lights 5. Car sunroof 6. Car/motorcycle alarmIncluded: 1*Remote Control