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Figure 4.2 Block Diagram Application Lock Door System
4.1.3 Unlock Door System
The application for the locked doors can only be done by the admin and
registered users only. Users can be send SMS command y typing “UNLOCK” followed
by password that can be designated “XXXX” and send to the GSM modem. The door
will open and this user will automatically received an SMS from GSM modem that
concern about the status doors and electromagnetic lock for that moment.
Figure 4.3 Block Diagram Application Unlock Door System
ALARM = IDLE
DOOR = CLOSE
LOCK = ON
ALARM = IDLE
DOOR = CLOSE
LOCK = ON
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