Receiver Unit

The receiver unit receives data from the sensor unit and forwards it to your smartphone via Bluetooth. Place the receiver unit no more than 2 m away from the smartphone for reliable connectivity.

Indicators

LED	Color	Meaning
Power	Green	Device is turned ON
Sensor	Orange	Connection with the sensor unit is established
Bluetooth	Blue	Smartphone / DroneRover app is connected

Controls

Control	Description
Slider switch	Turns the receiver unit ON / OFF

Notes

• The orange (Sensor) LED should turn ON after both the sensor unit and receiver unit are powered — this confirms the wireless link between them is active.
• The blue (Bluetooth) LED turns on when you open the DroneRover app with iPhone Bluetooth enabled.
• Batteries: 2× AA alkaline (non-rechargeable).

Troubleshooting

Problem	Likely cause	Action
Green LED does not turn on	Dead or missing batteries	Replace with fresh 2× AA alkaline batteries
Orange (Sensor) LED does not turn on	Sensor unit not powered on	Confirm sensor unit is ON and its antenna is tight
Orange (Sensor) LED does not turn on	Units too far apart or interference	Move units closer together; remove obstructions between antennas
Blue (Bluetooth) LED does not turn on	App not open or Bluetooth off	Enable Bluetooth on iPhone and open the DroneRover app
Blue LED turns on but drops out	iPhone too far from receiver	Keep iPhone within 2 m of receiver unit during the scan