Here is the meaning of the different LED colors and associated behaviors:
1x Green Blink: Sensor is powering on
Blinking Green: Sensor is in setup mode
Processes (Pair, Troubleshoot or Updates):
1x Green Blink: Success Message
1x Red Blink: Error Message
Checking battery level:
While the Maven Collar sensor is turned on, shake it to check its battery level.
3x Fast Green Blinks: battery is between 100%-20%
3x Fast Red Blinks: battery is between 20%-3%
Hope this helps!