For versions of firmware >144XXXX:

Meter Status:

• Shipping mode: One blink every 20 seconds
  • Radio is off, wake by shorting C and Ω inputs
• Standby: One blink every 10 seconds
  • Radio is on, meter is connectable from app
• Standby, SD card mounted: Double blink every 10 seconds
  • Radio is on, meter is connectable from app
  • SD card is properly mounted
• Standby, SD card error: Quadruple blink every 10 seconds
  • Radio is on, meter is connectable from app
  • SD card has an error
• Connected: Single blink every second
  • Bluetooth connection is active

Logging:

Every time a sample is recorded, the meter will give a triple blink.  This is in addition to the status blinks listed above.