I want to know if it is possible for the GSM shield to make a call to specific number automatically, for example when the temperature reaches certain limit it will make this call, is it possible?
And how can we do it?
Thanks in advance
Yes, it is possible. You can use the MakeVoiceCall to learn how do you call. Then, you have to buy a temperature sensor and read it value in your sketch. There are many tutorials with a wide range of sensors and examples.