For Novoferm Remote Control Key Fob Hand Set 502 MAX43-2, 504 MAX43-4 MTR43-2 XY
868MHZ for Hormann HSE 4 BS Hand Transmitter Garage Door Operator 4 Button mo. 502 MAX43-2. 504 MAX43-4. Open the case of your receiver. It's next to your motorcycle. Release the button. Press any button on your new remote for one second.