1.Factory settings defaults the infrared and ultrasonic function is off.
2.Turn on the infraed obstacles avoidance function by Switch 1 to ON.
3.Turn on the ultrasonic altitude hold by Switch 2 to ON
4.Turn on the infrared obstacle avoidance and ultrasonic wave height limit function at the same time will bring a lot of fun fun to fly.
Can also see it as a pingpong ball to play with for entertainment.
