Spektrum Air Module System Manual page 44

Binding
4. Press and hold the bind button on the back of the module while turning on
the power switch. The bind button will flash and within a few seconds the
system will connect. The LED's on the receivers will go solid, indicating the
system has connected.
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5.
6.
Remove the bind plug and store it in a convenient place.
After you've programmed your model, it's important to rebind the system so
the true low throttle and neutral control surface positions are programmed.
Spektrum Air Module