... FREE factory technical support for ever.You can Check our software/manual/full solution firstly, just send message ... .etc. Detail Parameters ItemDescriptionCommunicationTCP/IP 10M/100M adaptiveEnglish Software supportable databaseAccess and SQLDescriptionControl 4 doors, get in ... case, power, power line, serial port communication line, software, manual, certificate, key(2pcs), cartonAlarm for long time ...