Airdrop Parabolic Servo Switch Device Remote Control Control For Dji Phantom 3 Advanced Professional 3se Drone Accessories - Landing Gear - AliExpress
P3s S2 use ? | DJI FORUM
DJI Support - FAQ #5 What is the 'P A F' switch about? A. Positioned on the controller itself, this is the Flight Mode Switch that lets you toggle different flight modes;