Philips Lytemode 6-Button Remote Station User Manual page 14

While in the Addressing Mode, the device will transmit a Network
Test Command every 2 seconds (ON will blink). All devices on the
network will blink an LED to indicate their reception of this
command. If a receiving device matches the transmitted ID, it will
blink all of its LEDs. Those devices that are capable of being polled
will return a Network Test Response if the transmitted ID matches
their own ID. If the transmitting device sees a Network Test
Response, it will double blink its ON LED. This is useful for
network testing and to determine if the ID is unique.
When programming the ID of a unit set to Remote (Mode 0),
Note:
tapping the Raise or Lower button on a Master, Mini-Master, or
another Remote unit will capture the ID and exit the Set ID mode.
12
Basic Setup