Features: Experience precisions and stable performances with KK2.1.5 PLUS KK2 Flight Control Board, for electronic components and enhanceds flight control capabilities. This flight controller features integrated PDB, onboards switches, and buzzers, optimizing power supply to reduce wiring complexity and ensures quick installation. for hobbyists and professional Drones enthusiasts seekings advanceds control system for multirotor and fixed wing aircraft. for photography, recreational flying, or experimental Drones projects, offering flight modes including quadcopter, hexacopter, and VTOL configurations. Easily adjust through LCD screen and button without needing computer, making it user friendly for level of expertise in Drones technology. Specifications: Materials: ABS Side length: 52mm/2.05inch Package Includes: 1Set KK2.1.5 Plus KK2 Flight Control Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.