SMH10 - Four-way conference intercom Sena November 03, 2017 20:19 Follow Have more questions? Submit a request 1 Comments Date Votes 0 Mike Stanley May 18, 2016 15:25 This video does NOT answer some very important issues. 1 - The sequence of paring in the video doesn't match the initial diagram which says Your unit and B pair first but the video paired Your unit and A first! 2 - None of the units are in the pairing mode with red lights flashing per the manual. How does A know to pair with your unit and the others don't start pairing with your unit since all have flashing blue lights? Article is closed for comments.