Connect your Wellue O2 device over Bluetooth

PulseOxTracker talks to your Checkme O2 Max, O2Ring or SleepU directly from the browser using Web Bluetooth. There is no app to install and nothing to upload manually.

Switch on Web Bluetooth on Linux or in Brave

Chrome and Edge on Linux, and Brave on every system, ship with Web Bluetooth switched off. The dashboard shows the address to open when it finds this.

1. Paste the address into a new tab. Browsers block links to these pages, so it has to be pasted or typed.
   • Chrome on Linux: chrome://flags/#enable-web-bluetooth
   • Edge on Linux: edge://flags/#enable-web-bluetooth
   • Brave: brave://flags/#brave-web-bluetooth-api
2. Set the highlighted entry to Enabled.
3. Click Relaunch, then reopen PulseOxTracker.

If Chrome or Edge has no Web Bluetooth entry, enable Experimental Web Platform features on the same page instead.

Pair the device

1. Turn on your Wellue O2 device and make sure it is not connected to the Wellue phone app (a device can only be paired with one client at a time).
2. Open the dashboard and click Connect via Bluetooth in the toolbar.
3. Pick your device from the browser's pairing dialog and confirm.

When the connection succeeds the status pill turns green and Download History becomes available.

Troubleshooting

• No device in the list - confirm the device is awake and unpaired from the phone app.
• Connection drops - keep the device within a couple of metres of your computer during sync.
• "Bluetooth is switched off in this browser" - follow the steps above to switch on Web Bluetooth.
• Button is disabled - you are already connected; jump straight to running your first sync.