... alarm management system.ParameterCommunicationTCP/IP 10M/100M adaptiveEnglish Software supportable database:Access and SQLDescriptionControl 4 doors, get ... case, power, power line, serial port communication line, software, manual, certificate, key(2pcs), cartonAlarm for long time door open, ... no connection with the expansion board, only has software interface alarm, and drive the computer speaker. If ...