Motorola M900 User Manual page 8

LED status Description
Steady Green Working from CLA or AC power supply and not charging.
Blinking Orange Charging
and Green
Blinking Red Low battery
Blinking Green Supply voltage from back up battery
Buzzer
Beep type
High pitch beep
Medium pitch beep
Low pitch beep
8 - Getting Started
Description
Low battery
External Microphone connected or disconnected
External DC supply connected or disconnected