It depends on product type.

FleetPulsePRO (and Base, Base+ legacy product): Red light is on when the trailer is tethered and receiving power from the 7-way (red light blinks if gateway internal battery is charging). Amber light is on when the trailer is tethered and a GPS fix is acquired (amber light blinks if the device is acquiring a signal). Green light is on when the trailer is tethered and a cellular fix is acquired (green light blinks if the device is acquiring a signal). Blue light is on when the trailer is tethered and sensor data is communicating through CAN line (blue light blinks if the device is testing CAN).

FleetPulseGO CargoView:

- LED1: Red (power shutdown), Blue (power processing), Green (power active)

- LED2: Red (SIM card issue), Blue (cellular testing), Green (cellular connected)

- LED3: Red (taking cargo image), Blue (processing cargo image), Green (reporting cargo image)

- LED4: Red (GPS issue), Blue (GPS testing), Green (GPS confirmed)

- LED5: Red (low power mode processing), Green (lower power mode active)

FleetPulseGO Solar:

- Left Blue LED: Off (no cellular connectivity), Fast Blink (cellular testing), Medium Bink (cellular connection found), Slow Blink 1Hz (cellular connected)

- Middle Green LED: Solid (GPS testing), Slow Blink 1Hz (GPS connected)

- Right Red LED: Fast Blink (optional Bluetooth, Zigbee, or wired sensor signal)

FleetPulseGO Track:

- Green LED: Flashing (power processing), Solid (cellular and GPS connected)

- Blue LED: Flashing (cellular testing), Solid (cellular only connected)

- Orange LED: Flashing (GPS testing)

- Red LED: Solid (cellular connection failed)