Good Afternoon,
I have a project in which i am monitoring a house door which is controlled by an electromagnet using digital lock logic,
i.e only when the keys pressed match with the code it will operate the electromagnet and open the door otherwise it will sound an alarm.
Now as an extension to the project can i send a SMS on to a mobile. If yes can you tell me the guideline for the same such as which device should be interfaced with the micro-controller (8051).I have heard about the GSM module can it be used for the same?

Thank you.

Regards
Sagar Kadam