The Ext1 slot is also used for the firmware update connection (using
the USBa).
Rx1 - primary input for connecting receivers with serial output (EX
bus or PPM)
Rx2 - secondary (backup) input for connecting receivers with serial
output (EX bus or PPM)
Switch input is reserved for connecting a magnetic switch or RC
switch (optional accessories).
BATT1 and BATT2 – MPX connectors for connecting batteries or a
BEC, etc., to power the servos and receivers connected to the
Central Box.
RC Switch
input voltage
4-14V
Fig. 1: Central Box description
4 EN
Magnetic Switch
EN
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