Press and hold the required remote transmitter button, in other words the colour you wish to use.
RX LED flickers lightly.
Short circuit the middle RX
programming pin to the BT pin.
(Closest to the gate)
RX LED flashes
1 flash = First transmitter learnt.
2 flashes = Successful there is still
Multiple rapid flashes = memory full.
Remove the short circuit once the
RX LED flashes confirmation.