What does the range extenders flashing light mean

KX-TGA405 Range Extender — Indicator Lights
Indicator LED Color Light Status Meaning
STATUS indicator Green On
  • Within base unit range. The unit is ready for use.
Flashing
  • 1 handset is communicating with the base unit through this unit.
Flashing rapidly
  • 2 handsets are communicating with the base unit through this unit.
Red On
  • Out of base unit range.
Flashing
  • The unit is in registration mode
Off
  • The power is off. (AC adaptor is not connected properly.
status signal icon indicator Green On
  • Signal strength of the base unit is strong.
Amber On
  • Signal strength of the base unit is weak.
Red On
  • Out of base unit range.
Off
  • The unit is not being used
  • The Power is off.