D-Link DAP-1620 Quick Installation Manual page 6

PLACEMENT
Note: Please refer to the User Manual for device specific LED behaviour.
One amber bar indicates a weak signal. Move your extender closer to
your router to improve signal quality. Make sure that your extender is
placed in an open environment.
Place the extender in range of your router. Check the LED indicator
on your extender to ensure a proper connection. Green bars indicate
a strong signal.
4
< 1 m
< 1 m
< 1 m
< 1 m