The TS‎-902 is a Delegate unit of the Infrared Conference system‎.‎ Since the system is cordless‎,‎ it can be easily installed and removed‎.‎ It can be operated on either the AD‎-0910 AC adapter ‎(‎optional‎)‎ or the BP‎-900 lithium‎-ion battery ‎(‎optional‎)‎‎.‎ It is equipped with a remaining battery indicator‎.‎ Two types of dedicated microphones are made available for the TS‎-902 as optional products‎:‎ the TS‎-903 standard type and the TS‎-904 long type‎.‎