SPEEDYBEE Nano 2.4GHz ELRS接收机使用手册
ELRS-2G4-RX_manual_CN.pdf
如何与飞控连接：
https://docs.speedybee.cn/fpv/receiver/common-issues-with-elrs-receivers/how-to-set-up-your-receiver-in-betaflight-configurator.html
