This X12 flight controller is all-in-one and consists of a 12A ESC as well as an OPENVTX.

SPECIFICATIONS
Betaflight firmware target : CRAZYBEEF4SX1280
RX antenna : SMD ceramic
VTX antenna : UFL
Amperage meter scale : 470
Weight : 5.1g
Size : 30*30*8mm
RF Frequency: 2.4GHz
Antenna : SMD antenna
Telemetry output Power: <12dBm
Receiver protocol: SPI ExpressLRS
Compatible with ExpressLRS V2.0 TX Module
Couldn’t flash separately ExpressLRS firmware

INCLUDED
X12 ELRS AIO Flight Controller x 1 pcs