LightwaveRF Glow LW420 Instruction Manual page 19

Device setup
Clearing the memory (will remove all linked controllers):
1. On the gang to be cleared, Press and
hold down both the 'on' and 'o '
buttons until the blue and amber LEDs
flash alternately then release. The
dimmer switch is now in linking mode.
2. On the dimmer switch, press and hold
down the 'o ' button again until the
blue and amber LEDs flash
simultaneously, then tap (don't hold)
the 'o ' button a further time; the amber
LED will flash to confirm that the
NOTE: Reliable range of remote operation is around 15 metres indoors and
up to 100m outdoors (using a Lightwave Link). This figure may vary
depending upon the environment; very thick walls, bodies of water or large
metal objects may interfere with radio range.
If the distance between the transmitter and receiver is too great to achieve
reliable operation, the LightwaveRF Signal Booster may be used in
conjunction with this product to increase the range.