Bluetooth Pairing
S2 communicates with the ReaSnow Manager APP exclusively over Bluetooth Low Energy (BLE). There is no USB data connection between the APP and S2 — all configuration, firmware updates, and real-time monitoring happen wirelessly.
First-Time Pairing
- Power on S2 — the LED will show slow-flashing blue (waiting for BLE connection).
- On your phone, turn on Bluetooth and Location/GPS.
- Open the ReaSnow Manager APP.
- The APP automatically scans for nearby S2 devices — look for a device name starting with ReaSnow-S2- followed by a unique identifier.
- Tap your S2 in the device list to connect.
- The LED changes to solid blue when connected.
ℹ️ Info: Grant Bluetooth and Location permissions when asked. On Android, BLE scanning requires Location permission at the OS level — this is an Android requirement, not an S2 requirement.
Auto-Reconnect
S2 remembers the last paired phone. After the initial pairing:
- Power on S2 → the APP auto-reconnects within 5 seconds (if the APP is open and Bluetooth is on).
- If the BLE connection drops unexpectedly, the APP automatically attempts to reconnect.
- Upon reconnect, the APP resets to the Home tab.
Connection Rules
| Rule | Detail |
|---|---|
| One phone at a time | S2 accepts only one BLE connection. A second phone cannot connect while another is paired. |
| Range | Up to 10 meters in open air. For firmware updates, stay within 2 meters. |
| No USB tethering | APP-to-S2 communication is BLE only. The USB ports carry no data connection to the phone. |
Custom Bluetooth Name
Set a custom name for your S2’s BLE broadcast to make it easy to identify when multiple units are nearby:
- Go to Settings → Global Settings → Custom Bluetooth Name.
- Enter a name up to 15 bytes (UTF-8).
- Tap Save — the new name takes effect immediately.
Useful in tournament or LAN party settings where several players may have S2 devices in range.
Troubleshooting
| Symptom | Likely Cause | Solution |
|---|---|---|
| S2 not showing in device list | Bluetooth or Location is off | Turn on both Bluetooth and Location; grant permissions to the APP |
| S2 not showing in device list | S2 is already connected to another phone | Disconnect the other phone or power-cycle S2 |
| Connection drops frequently | Too far from S2 or BLE interference | Move closer; avoid dense wireless environments (Wi-Fi routers, other Bluetooth devices) |
| Connection drops during firmware update | Phone screen turned off or APP backgrounded | See Firmware Update for update rules |
| LED stays slow-flashing blue | Paired phone not in range or APP not open | Open the APP; check that Bluetooth is enabled |
💡 Tip: If nothing else works, restart your phone’s Bluetooth, power-cycle S2, and try again. This resolves most BLE pairing issues.