... line/MIC, input voltage<2.5Vpp,/input impedance >10KOhm. single track plugMIC available Vbias=3.3v*3/4,inside20dB amplifier,input ... impedance >3Kohm. single track plugAudio output:BNC, 1channel audio output output<4Vpp,power< ... 1W, load>8Ohm single track plugUser management supports the three-level password AlarmAlarm detect and ...