＊ Each channel can control up 36 sets attendance unit,

   conventional products can connect 72 sets attendance

   unit, additional expansion devices can be connected

   more than 500 sets of attendance unit.
＊ The appearance of the machine lightweight, can be

   placed on flat surface or mounted on a standard

   19 "chassis.
＊ Have equal line output interface; around line output

   interface; and not parallel output interface to

   accommodate a variety of devices connected.
＊ The machine itself is not with amplifier and

   speakers, to be used in combination with the

   amplifier and audio.
＊ Power: 50W
＊ Dimensions: 485mm x 212mm x 45 mm