... number and Voice recording will not be lost even power off.7, Can store 4 group numbers , max 16 ... third code. (first three codes)can set disarm, if all 6 group code can change set9.Original password from ... be free to conect to NO.or NC ,but if connect to DC 12V, then blue or (yellow) ... time is 4 seconds, and so on, so have this feature , it can automatically calls to extension phoneconnect to (#) ...