You can leave the basic settings (except fail-safe) in the main receiver (A). If you have a receiver with SAT input, you can use it to back up the main receiver.
In the secondary receiver (B), which is intended for additional (secondary) functions, you have to change the outputs of the receiver ("channel mapping"). If you use the secondary receiver (B) as a backup, set the PPM output and the number of channels.
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In this specific connection, if the main receiver A loses the signal, it’s backed up from the receiver B. If the secondary receiver B loses the signal, you will only lose the additional (secondary) functions of the model.
This connection is of course very specific and if you need many servo outputs, we recommend using our Central Boxes 210/220 and 400.
