TOPCHANCES ZDL9908 DualWay Counter Interphone Audio Record AntiInterference Window Intercom System Interphone Speaker for Bank Hospital Station Counter

Description: All of our items are Brand New This item is suitable for short distance communication. It is simple, economical and convenient. More Detail and Spec of product please Metro Shop Voltage:110V/220V?Tell us which voltage you want, or we will sent the 220V one? Working voltage:DC9V Most working current:600mA Main sound box,sub-sound box:2w-2w 100Hz-15KHz Inside microphone:-48db±2db 20Hz-20KHz Outside microphone:-48db±2db 20Hz-16KHz Frequency response:100Hz-12KHz Destop unit dimensions:182*120*56?mm? Wall mount unit dimensions:61*85*24(mm) The speaker cord is 191cm