# Configuration

VALTRACK-V4-VTS-ESP32-C3 can be configured using Bluetooth. An android application is made available on play store called VALTRACK-V4E-SETUP, which can be used to write and read the device parameters from the flash memory of ESP32-C3.\
\
Procedure is very simple. 

[Click here to Download the app](https://play.google.com/store/apps/details?id=com.valetron.valtrackv4e\&hl=en_IN\&gl=US)

<div align="left"><figure><img src="https://3503701112-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDviKs2J6kRDnmAGBdimD%2Fuploads%2FqJ9AOpJVzI3ya0pyG74W%2Fgplay_.png?alt=media&#x26;token=b3db18af-eb2a-40f4-8e24-8edf228bbc1f" alt="https://play.google.com/store/apps/details?id=com.valetron.valtrackv4e&#x26;hl=en_IN&#x26;gl=US" width="162"><figcaption></figcaption></figure></div>

* Turn on Bluetooth and Location
* Open the VALTRACK-V4E-SETUP app.&#x20;
* Turn on the device
* Scan for devices and select CONNECT button infront of VALTRACK-V4-XX device name
* <mark style="color:orange;">Once connected, press on SYNC button to read the services</mark> <mark style="color:red;">**(This is important)**</mark>
* MTU will change to 256&#x20;
* Select the parameter name from Dropdown
* Press READ button to read the parameter, the read value will be displayed in the text box below and in the edit box above the button
* Enter the value to be written to the parameter in edit box and press write
* There is a clear button given for clearing edit box if it text becomes too big.&#x20;