Green - Recording
Green light means recording is on. To activate recording press side button. Press again to stop recording or it will automatically stop after 1 minute.
White(bottom) - Transferring audio
White light on the bottom means recording is being transferred to the phone. It can happen both during recording and in between recordings.
Blue(blinking) - Bluetooth on, searching for phone
Blue light means Senstone is disconnected from phone and is trying to reconnect. Place Senstone within 2 feet(60 cm) to the phone to reconnect. If it doesn’t help reopen Senstone app and it will automatically reconnect. You can always chekc connection status in Settings -> My Senstone
Red - Error
Red light means something is wrong and Senstone cannot function properly. Go to Settings -> My Senstone to see the details. Typical problems are low battery, unsupported firmware version, insufficient disk space on iPhone.