●Large-capacity lithium battery for 8 hours speech or 25 hours stand-by time. ●Easy for mount and remove. ●It is used in infrared transmission for its merit of high confidentiality,anti-eavesdrop,no radio interference,moible phone anit-interference and no electromagnetic radiation. ●Auto-tracing funtion.It can connect up to 128 sets unit. ●4 channels coaxial infterface.It can expand 64 sets infrared receive unit. ●Supports for individual sound recording. ●Front board with LCD screen,which display the status of system and menu. ●First in first out funtion ●Transmission frequency:1.7MHz-10MHz.It is not affected by the high frequency driving light interference. ●Response frequency:20Hz-25KHz ●IEC60914 international standard and GBT 15381-94 China standard. |