Daisy Chain/Use Alone Ideal For s/l Meeting Space – eMeet M220 Bluetooth speakerphone features daisy chain functions, cascading 2 conference speakers greatly expand your effective meeting space, delivering superb audio for collaborative conference. It’s a new upgrade based on M2 considering the needs of our customers. The best part is that you can not only take M220 to a larger meeting, letting more attendees participate in the conference call, but use alone for 2 small rooms as two M2 speakers.