This article covers what happens when your WTH (Wireless Temperature Hub) powers on for the first time, and how to pair it with the LF Audio AuralSync app over Bluetooth.
First Power-On
When the WTH receives power, the screen lights up and the hub immediately begins looking for connected sensors and displaying temperatures. There is no lengthy setup sequence: monitoring starts on its own.
- Each channel that has a working sensor connected shows a temperature within a few seconds
- Channels with nothing plugged in stay blank
- Readings are shown in Fahrenheit, colored on a cool-to-hot scale (see Display and Navigation)
The hub detects sensors automatically. If a sensor is plugged in after power-on, its channel populates once the hub finds it, usually within a few seconds. You do not need to pair with the app to use the hub for on-screen monitoring: the display works on its own as soon as power and sensors are connected.
If a channel stays blank, the hub has not detected a sensor there. Confirm the sensor is fully plugged into its port and correctly placed, then give it a few seconds. See Troubleshooting if a known-good sensor still does not appear.
Pairing With the AuralSync App
Pairing connects the hub to the LF Audio AuralSync app over Bluetooth, so you can set it up and manage firmware updates from your phone. Pairing is optional for basic on-screen monitoring but required for app features and over-the-air updates.
- Install the LF Audio AuralSync app on your phone (from the Apple App Store or Google Play) and make sure your phone's Bluetooth is turned on
- Power on the WTH and keep your phone nearby
- Open the app and start a scan for nearby LF Audio devices
- Select the WTH from the list of discovered devices
- If your phone shows a pairing confirmation, accept it to complete the secure connection
Once paired, the app connects to the hub whenever both are powered on and within Bluetooth range.
For the most reliable pairing, keep the phone close to the hub the first time you connect, and make sure the hub is not already connected to a different phone. Bluetooth links to one phone at a time.
Connection States
When you are working in the LF Audio AuralSync app, the app shows whether it is connected to the hub:
| State | Meaning |
|---|---|
| Connected | The app has an active Bluetooth link to the hub and can read from it and send settings |
| Connecting | The app is establishing the Bluetooth link. Keep the phone near the hub. |
| Disconnected | There is no active link. The hub may be out of range, powered off, or connected to another phone. |
The hub's screen keeps displaying live temperatures regardless of whether the app is connected: the Bluetooth link is only needed for configuration and firmware updates.
What You Can Do From the App
Once paired, the LF Audio AuralSync app lets you:
- Give the hub a recognizable name
- Provide the WiFi details the hub uses for firmware updates
- Start over-the-air firmware updates (see Firmware Updates)
- Register the hub for warranty coverage
See Menus and Settings for what is configured on the hub versus in the app.
Reconnecting
The hub and the app reconnect automatically whenever both are powered on and within range, so you normally do not need to pair again after the first time. If the app cannot find the hub later:
- Confirm the hub has power and its screen is on
- Make sure your phone's Bluetooth is enabled and the phone is nearby
- Confirm the hub is not already connected to another phone
- If needed, restart the hub (see Troubleshooting) and scan again
For connection problems that persist, see Troubleshooting.