HM30 User Manual v1.3
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5. Return to the initial page, if there is an “x” icon right after the selected RC input
mode, there is no RC signal input through the RC port. If the icon is “←→”, there
is RC signal input.
DANGER
Do not attempt this function during flight, otherwise the link will lose control.
3.1.4 Datalink Mode
HM30 ground unit supports multiple ways to establish datalink connection to the
GCS. They are Bluetooth, Type-C, UART, and UDP (through LAN / WiFi).