Emergency stop function
Emergency stop:
full throttle,then pull back to the bottom.
Push the left-right joystick of transmitter to left corner.
After fuselage recover to normally,
it means calibration finished.
When emergency situation happens, and need to stop flying at once, then
you can press down the two buttons simultaneously as below picture for
Emergency Stop, the motors will stop working at once and the drone will
drop down directly.
Please do not operate emergency stop during the process
of high flying!