Nơi xuất xứ
Guangdong, China
Application
Bank, post office, train station,ticket office, hospital
voltage
Input AC 100-240V Qutput DC +12V
Sensitivity mic
-42db±1db 20HZ--18KHZ
surface-treatment meaterial
brushed and anodic oxidation treatment
Interface
Power, Extension, Record
working current
static state 25ma