TuneRC Poly F405 2-4S AIO Flight ControllerNOTE: For 1404 (or similar sized) motors or 4S builds, it is essential to solder a low ESR capacitor across the AIO battery pads to avoid damage from voltage spikes. Always test your boards with a smoke stopper or similar method prior to their first test flight. Introducing the All in One (AIO) Masterpiece: The TuneRC Poly F405 2S 4S! Are you tired of juggling multiple components for your FPV micro community builds? Say hello to our versatile, high