XAIRCRAFT FC1212-P - Manual (Page 24)

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In Remote Control, when Input10 signal arrives or exceeds the red neutral line, the shutter servo starts a sequence
of half press (focusing) and press (shot) actions.
The shutter triggered (Input10)：
Note: if the switch keeps stay at the position of triggering shutter, the shutter will keep doing the focus-shot
again and again.
The shutter untriggered (Input10):
Servo Output Period
Click the Output Period button to set the period for different servo. Period of digital servo can setting lower , for
example 3ms, but the analog servo need to set to 10ms or more.
Autopilot
After install autopilot module, can use GPS Attitude mode, Height Hold and Return to Home functions.
GPS ATT Mode
Warning: Using GPS attitude mode, please ensure GPS has got enough satellites before the engines start.
General Input in Remote Control shows the flight mode. In GPS ATT mode, the copter will try to hold its position
after release the sticks of pitch and roll in 2 seconds. The picture below shows FC1212-P is under GPS ATT Mode.