Lose Control Protection Function; Rth Mode; The Condition Which Can Enter Into; Exit The Rth Mode - Hubsan X4 PRO Manual

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9 LOSE CONTROL PROTECTION FUNCTION
When the X4 Pro lose the signal of the transmitter (lose control), the flight control system will
control the X4 Pro to land or return to the departure position and land automatically, it can
prevent the X4 Pro from losing or crashing.
a DEPARTURE POINT: When the X4 Pro enter into safe flight state (no GPS) from semi-safe
flight states, the X4 Pro will record the position as departure point_
9.1 THE CONDITION WHICH CAN ENTER INTO THE LOSE CONTROL
PROTECTION MODE
(1) The transmitter is power off_
(2) The flight distance is beyond the effective distance of the transmitters signal's transmission.
(3) There are obstacles between the X4 Pro and the transmitter_
(4) The transmitters signal was disturbed.
9.2 EXIT THE RTH MODE
Pull down the RTH function switch; the X4 Pro will exit the RTH Mode.
• To ensure the X4 Pro can return to the departure point successfully after it lost
control, fly after the X4 Pro enter into the safe flight states.
• During the process of losing control & returning, if the quantity of GPS star less than
6, and lasting for 20 seconds, the X4 Pro will descend automatically.
• The X4 Pro can't avoid obstacles when it is in RTH mode, you can set the height
value to avoid the obstacles_
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