When the AirBeam2 device is powered on, a steady red light indicates that the device is on and performing a system check. A blinking red light means the device was disconnected from the app while in mobile mode.
The green light means the Airbeam2 is in configuration mode and is ready to be connected to the Aircasting app on the paired Android phone. If the AirBeam2 is not configured within 50 seconds, the light will turn off and the Airbeam2 will load its last configuration.
The white light on the Airbeam2 device means the device is configured for a mobile session and is connected to the Android phone.
A slightly more technical description of all lights and statuses from the team that developed the AirBeam2 sensor is provided below:
When first powered on, the AirBeam2 Connection Indicator will shine red for ten seconds to indicate the AirBeam2 is performing a system check. During the next fifty seconds, the Connection Indicator will shine green to indicate the AirBeam2 is in configuration mode. Once configuration is begun, the configuration window will remain open until configuration is complete. If configuration is not initiated within the fifty-second window, AirBeam2 will load the last know configuration. To reopen the configuration window, power your AirBeam2 off/on.
When AirBeam2 is configured for a mobile recording session, the AirCasting app will connect to the AirBeam2 via Bluetooth and the Connection Indicator will shine solid white for 2 minutes. If the AirBeam2 is disconnected while in mobile mode, the Connection Indicator will blink red. When AirBeam2 is configured for a fixed recording session, the Connection Indicator will shine blue while acquiring the time and date and then shine white for 2 minutes while AirBeam2 begins taking measurements and sending data to the AirCasting website."