This guide explains how to pair your SIT wearable sensor with the mobile app over Bluetooth Low Energy (BLE). You only need to do this once per device — it will reconnect automatically in future sessions.
Before You Start
Open your phone's Settings and make sure Bluetooth is turned on.
On first launch the SIT app will ask for Bluetooth and location permissions. These are required for device scanning — tap Allow.
Press and hold the button on your wearable until the LED indicator flashes. This means the device is advertising and ready to pair.
Stay close
Keep your phone within 2–3 metres of the device during pairing for the strongest signal.
Pair Your Device
The app scans for SIT-branded BLE devices and shows them in a list along with signal strength (RSSI) so you can identify the closest unit.
The app will begin scanning for nearby SIT devices automatically.
Devices appear as SIT-XXXX where XXXX is the unit's serial suffix. Signal bars indicate proximity — more bars means closer.
Select the device you want to pair. A brief connection animation confirms a successful link.
The device card will show a green Connected badge. You are ready to assign it to a player and start monitoring.
Troubleshooting Tips
Device not appearing?
Make sure the device is powered on and the LED is flashing. Try moving closer and ensuring no other phone is already connected to it.
Turn the wearable off and on again. This clears any stale connection state.
Force-close the SIT app and reopen it, then try scanning again.
A low battery can weaken the BLE signal. Charge the device and try again.
Move away from other Bluetooth devices, Wi-Fi routers, or microwaves that may cause interference.
Still stuck?
See our full Bluetooth troubleshooting guide or contact support@sportsimpact.tech.