Detrum Z3 EP Lite Autopilot RC Airplane Flight Controller RTH w/ GPSDetrum Z3 EP Lite RC Airplane Flight Controller w GPS DTM FC02 Detrum Z3 is a flight controller for fixed wing airplanes, including normal, delta wing, and V tail airplanes. It connects to the receiver on the airplane to provide flight control. Z3 supports five flying modes: Return Home Mode: once actuated, the airplane flies back to the location where it takes off regardless of the airplane flight attitude; Normal Stabilization Mode: provide basic