FM250 LED Indicators

Discover how to effectively use the FM250's button and LED indicators for optimal functionality.

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The purpose of this page is to provide insight on the behavior of the FM250 flow monitor button behavior and LED indicators.

Device Legend

Button Behavior

When pressed but not held down, both buttons will wake the device. The device will either enter the shipping state or the state the device was in prior to powering it down.

Button Icon	Button Color	Button Function
Play	Green	Press and hold the green play button for ~3 seconds. The device will attempt to enter Meter mode, where it will capture and report usage data.
Bluetooth	Blue	Press and hold the blue bluetooth button for ~ seconds. The device will attempt to enter Debug ode, turn on the Bluetooth module, or start advertising the serial number of the device via bluetooth.

LED Indicators

LED Color	LED Behavior	Example
Solid Yellow (both LEDs)	Displays when the device is in Shipping mode.
Blink Yellow (both LEDs)	Displays when the device is advertising itself for Bluetooth connectivity in debug mode.
Blink Yellow (bluetooth LED Only)	Displays when the device is connecting to LTE cellular.
Blink Green	Displays when the device has successfully connected to LTE and is waiting for the cloud servers to respond.
Solid Green	Displays when the device has successfully connected to the cloud via LTE. The LED will remain on for ~10 minutes after successfully connecting.
Blink Red	Displays when the device failed to connect to LTE The LED will remain on for ~5 minutes after trying.
Solid Red	Displays when the unit failed to connect to the cloud via LTE. The LED will remain on for ~ 1 minute.
Off	Displays when the device is In shipping mode or Bluetooth is connected in Debug mode or 10 minutes have passed since a manually triggered cloud connecting in Meter/Setup mode.