How to bind an NB4 RX w/bind button & update firmware, set up voltage alarm with the internal sensor

In this video, I will show you how to properly update the RX firmware and bind it to your FLYSKY NB4 / NB4 PRO. This video will also show you how to set up an internal sensor as well as set it up on your radio controller. How to use the built-in voltage meter on your RX and to set an alarm on your radio controller if the battery voltage gets to your set low or high voltage levels.

To update your FLYSKY NB4 here is a set-by-set guide video.
Flysky NB4 2.0.101 firmware update guide:    • Flysky NB4 2.0.101 firmware update gu...  

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This is the list of items you can use for your FLYSKY NB4 / NB4 PRO. These are some affiliate links. If you like to help me out at no cost to you, please use the links below to purchase the items. If not, at least click on them to check them out.

Flysky Noble NB4 Rc Car Transmitter Receiver FGr4 V2 & FGr4s V2, 2.4GHz 4 Channel AFHDS 3: https://amzn.to/4516Daq

Voltage Sensor Module: https://amzn.to/451fUis
Temprature Sensor Module: https://amzn.to/3Oau8qD
Speed Magnet Sensor Module: https://amzn.to/475K0Du
Speed Optical Sensor Module: https://amzn.to/3YmsVBn

Gr4S V2 Receiver, 2.4GHz 4CH AFHDS 3: https://amzn.to/3q7qQfC
FGR4P Receiver, 2.4GHz 4CH AFHDS 3: https://amzn.to/470EIsT
FGR4 Receiver 2.4Ghz 4CH AFHDS3: https://amzn.to/43KHtvs
FGr4B Micro Mini Receiver, 2.4G 4CH 3 AFHDS 3: https://amzn.to/3Oa5Ahi
FGR8B Receiver, 2.4GHz 8CH AFHDS3: https://amzn.to/43Efv4v
FTR10 Receiver, 2.4GHz 10CH AFHDS 3: https://amzn.to/3rMADbK
GMr Receiver, 2.4GHz 4CH AFHDS 3: https://amzn.to/3DMwpUh
FTr4 Receiver, 2.4GHz 4CH AFHDS 3: https://amzn.to/3QcHwgu
KY-MiniZ RF3 Mini Receiver AFHDS3: https://amzn.to/3Dy2OgQ