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Omnibus F4 Pro (on-board current sensor) and Omnibus F4 AIO (no sensor onboard) — Copter documentation
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Amazon.com: Drone Accessories for F4 V2 Pro Flight Control / F405 / F4 V3 V3S Plus Flight Controller for APEX Mini 225mm 260mm FPV Freestyle RC Racing Drone Replaceable (Color : Omnibus
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Omnibus F4 Pro (on-board current sensor) and Omnibus F4 AIO (no sensor onboard) — Copter documentation
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