I was wondering if you could help me?

 

I am looking at this gsm module as a means of contact me.

 

I have no telephone landline at the premises I want to install this and I need something that will phone me like a mobile phone and not just send text messages as this would not work, due to hearing a text message at night.

 

Also how many numbers can be stored/programmed into the module?

Are you looking at a particular unit?

Most accept upto 4 telephone numbers but are generally regarded as a low security device (just like any voice / text dialler)