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Figure 4.6 Block Diagram Security Users

4.2.3 Password

If the admin or registered users send a command to lock or unlock this system

but followed with a wrong password, the door cannot be opened or closed. Users will

received an SMS alert “DENIED – WRONG PASSWORD” from the GSM modem.

Figure 4.7 Block Diagram Security Password

Sent SMS

Received SMS

LOCK XXXX

DENIED – WRONG

PASSWORD

Admin &

Registered User

GSM

Sent SMS

Received SMS

LOCK XXXX

DENIED – UNREGISTERED

USER

Unregistered User

GSM

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Witura WT-9001 IP65 Spezifikationen Seite 59