Sonoff SNZB-04 Manuel D'utilisation page 6

SONOFF ZigBee Bridge supports connecting multiple
sub-devices at the same time.
Power the Bridge on, access the Bridge page in the eWeLink APP, and tap "Add". Then
set the sub-device to be paired to the pairing mode and be patient until the pairing
completes.
Delete sub-devices
Long press the reset button on the sub-device for 5s until the LED indicator flashes three
times. In this case, the sub-device is deleted from the Bridge successfully.
Users can delete sub-devices directly from the sub-device page on APP.
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