Ian: This is copied straight from my Planet Transmitter Manual. I hope it is helpful.
BINDING TRANSMITTER TO RECEIVER
A working 2.4Ghz transmitter and receiver have a coded, 'bound' relationship with each other. The setting up of
this relationship is known as 'binding'.
In a 'bound' transmitter/receiver relationship the receiver is exclusively bound to your transmitter and can only
respond to signals received from that transmitter. It will not respond to any other device or transmitter.
Once a transmitter is bound to it's receiver, re-binding of transmitter and receiver is not normally required.
However, by binding your receiver, for example, to a friend's Planet 7 transmitter, the unique relationship between
your original transmitter and receiver will be broken. Should you wish to - or need to, re-establish or 'bind' your
transmitter with your receiver once more; proceed as follows:
HOW DO I RECOGNISE WHEN MY RECEIVER IS NOT BOUND?
Upon connecting the battery in the model the receiver status indicator LED will flash on and off slowly regardless
of whether the transmitter is switched on or not. Even when the transmitter is switched on; no control or change
in the slow flash of the LED will be seen.
HOW DO I BIND RECEIVER AND TRANSMITTER?
▼ 1. Switch off the transmitter.
▼ 2. Connect receiver battery. Press the binding microswitch on the receiver undersurface briefly once with
your fingernail or a small screwdriver.
▼ 3. The receiver status indicator will flash in groups of three.
Binding LED
flashing in threes
▼ 4. Switch on the transmitter.
As the signals are acquired, the Binding LED will flash briefly and then glow solidly a few seconds later
indicating a successful binding.
▼ 5. Operate your model as normal. The Binding LED glows solidly once bound with the transmitter.