GSM module, used as alarm

Thread Starter


Joined Jan 14, 2009
Good day.

I'm looking to add GSM notification capability to a security system. I've found some GSM modules on ebay, such as

I need a device, which will calls specified number, when relay is triggered.

I've searched in the forum, there are a lot of topics which talks about PIC controllers. Question is, will I be required to built and additional circuit, to support GSM module, or do they come already as a "ready to use" module. And I think above link also will require controller, as it says it is controlled via AT commands...

Any links where I can enhance my knowledge about GSM modules/security systems/programming will be appreciated. Also, any particular good GSM modules, recommend pls where to buy