Infrared Wireless Conference System TS-901 Chairman Unit The TS-901 is a Chairman unit of the Infrared Conference system. Since the system is cordless, it can be easily installed and removed. The Chairman unit features a priority speech key which allows it to take precedence over the TS-902 Delegate units ( optional) when speaking. 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-901 as optional products: the TS-903 standard type and the TS-904 long type. Features - Voting function - Priority button for automatic over-ride delegate stations with Priority chime tone - Talk button - Built-in speaker automatically turns off when microphone is activated - Adjustable monitor volume - Headphone output - Gooseneck Microphone options: TS-903 Standard ( 14.5" ) TS-904 Long ( 20.4" ) - Power options: BP-900 rechargeable lithium-ion battery ( requires BC-900UL charger) AD-0910 AC power adapter www.visitelecom.asia