语音电路采用美国ISD公司的高保真录放一体化语音芯ISD1420来完成报警时进行语音提示的预存工作，根据警情的不同进行相应的提示语音录存-Voice circuit ISD company American Hi-Fi integrated voice recorder ISD1420 core to complete the alarm when the stored voice work, the different circumstances under the Police to ca