F3 V4 Flight Control Board Features Support 2-6S Lipo battery 40CH 25mW 200mW 600mW Switchable Transmitter Small size and light weight, easy to install Support identify and switch OSD and USB Function Integrated Transmiiter, OSD, PDB, 5V and Current Sensor, which more easier to install F3 V4 Flight Control Board Specs BEC Output: 5V 3A […]