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This is a replacementFlight controllerfor Hummingbird F4 V2 ELRS BNF it will be compatible with the Hummingbird Mark3 VtxCamera. Specification: STM-F411 MCU for the main controller (Preloaded with Betaflight) Support 1S battery ONLY Current sensor onboard ESC-12A Per Motor Channel BB21 MCU BlHeliS Support DShot(150This is a replacementFlight controllerfor Hummingbird F4 V2 ELRS BNF it will be compatible with the Hummingbird Mark3 VtxCamera. Specification: STM-F411 MCU for the main controller (Preloaded with Betaflight) Support 1S battery ONLY Current sensor onboard ESC-12A Per Motor Channel BB21 MCU BlHeliS Support DShot(150This is a replacementFlight controllerfor Hummingbird F4 V2 ELRS BNF it will be compatible with the Hummingbird Mark3 VtxCamera. Specification: STM-F411 MCU for the main controller (Preloaded with Betaflight) Support 1S battery ONLY Current sensor onboard ESC-12A Per Motor Channel BB21 MCU BlHeliS Support DShot(150