Motor run time can be set here. Setting 0 means no maximum. Any other value will start a countdown after the motor is actually started, and kill the motor after the countdown has reached 0.
Rearming the throttle will reset the timer.
Motor altitude can de set here. setting 0 means no altitude limit. When the plane hits the altitude set, the motor will be killed. It needs ot be rearmed by putting the trhottle to zero and MOVING the safety switch from SAFE to ARM.
The altituse sensor can be reset automatically when the arm procedure is done. This allows for consistent altitude readouts.