> For the complete documentation index, see [llms.txt](https://tankmate.gitbook.io/tankmate/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tankmate.gitbook.io/tankmate/wi-fi-connectivity/using-bluconnect.md).
# Using BluConnect
{% hint style="warning" %}
Your phone must have **Bluetooth turned ON**, as well as [**Location Services!**](/tankmate/wi-fi-connectivity/enabling-location-services.md)\
**Your WiFi network must** have [**2.4GHz enabled**](/tankmate/wi-fi-connectivity/2.4ghz-wifi-network.md)**.**
{% endhint %}
{% hint style="info" %}
To edit the WiFi connection of an **existing** sensor:
* In the TankMate **mobile app**, go to **Settings** > **Sensor / Tank Settings**
* Select "**Edit Network Settings**" - from the Sensor Settings section
{% endhint %}
* Make sure your sensor is in the correct mode for BluConnect - see details for [v2 sensors here](/tankmate/wi-fi-connectivity/reconnect-v2-wifi-level-sensor.md), or [R3 sensors here](/tankmate/wi-fi-connectivity/reconnect-r3-wifi-level-sensor.md)
* On the BluConnect screen - press the button to **"Initiate Bluetooth Connection".** This will create a temporary bluetooth connection between the phone and the sensor, to allow the phone to send the WiFi credentials to the sensor.
{% hint style="info" %}
**TIPS:**
* You do **NOT** need to search for, or pair the sensor as a bluetooth device **outside of the TankMate app**. It must be done from **within the app**, on the BluConnect screen. If you have paired the sensor on your phone's Bluetooth devices screen - unpair / forget the device before continuing.
* If you are having **difficulty finding the sensor** - turn Bluetooth (on your phone settings) **OFF** and then back **ON**. Further [troubleshooting tips below](#troubleshooting-bluconnect).
* The **sensor** should be **within a few metres of your mobile phone** - to ensure the temporary bluetooth connection is in range
* **iPads** can have issues with this process! Use a mobile phone instead.
{% endhint %}
On the next screen:
* select the name of your **WiFi network** and **enter the password**
* Ensure **the sensor is still blinking blue slowly**
* Press "**CONFIRM**" to send your network details to the sensor
{% hint style="info" %}
If you **can't see any SSID** options listed, check the following:
1. You are **connected** to the target **WiFi network**
2. You have **enabled Location Services** for the TankMate app. [See here for details](/tankmate/wi-fi-connectivity/enabling-location-services.md)
{% endhint %}
A **success message** should be displayed in the app after 5-10 seconds. The **LED** on the sensor will turn a **solid light blue** (cyan) colour for **5-10 seconds** after a successful connection.
### Troubleshooting BluConnect
#### Error Messages after sending your SSID / password
* Incorrect password - check your WiFi network password
* Network error. TankMate sensors can only connect to **2.4GHz** networks. Combined 2.4 / 5GHz networks are also supported. Check your network details. [Further WiFi tips can be found here](/tankmate/wi-fi-connectivity/check-status-v2-and-r3w-wifi-sensors.md).
{% hint style="danger" %}
**NOTE:** WiFi passwords that include the **$ symbol** are not currently supported by TankMate sensors. We recommend modifying the password, or setting up a guest network with a different password.
{% endhint %}
#### I cannot see any device listed when I scan using the BluConnect screen
* Ensure Bluetooth is turned on. If it is, try turn Bluetooth OFF and then back ON. Exit the BluConnect screen and come back in if the issue persists.
* Check that [**location services**](/tankmate/wi-fi-connectivity/enabling-location-services.md) are turned on
* Don't use an **iPad**! These are not always compatible with our Bluetooth (BLE) protocols
* Make sure you are **close to the sensor** (1-3 metres)
* Check that the **sensor** is in the **correct mode** for BluConnect - see details for [v2 sensors here](/tankmate/wi-fi-connectivity/reconnect-v2-wifi-level-sensor.md), or [R3 sensors here](/tankmate/wi-fi-connectivity/reconnect-r3-wifi-level-sensor.md)
#### The app is stuck spinning after I send the SSID / password
* Check that you are **close to the sensor** while completing this process. The temporary Blutooth connection only has a range of a few metres
* Ensure **the sensor is still blinking** (Blue or Purple, depending on model) **when the network details are sent to the phone**. If not - press the RESET button once (to wake it up) before pressing "CONFIRM".
---
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