Sorry don’t take me as Digi 's sales guy, as in last posts i had insist people about using Xbee modules. But performance of Xbee module captivate me

It’s good to start with basics using dtmf, Rf module. But the xbee are definitely a great solution eventually most of people get on to. Price is bit high (@ ~1500 here in pune) but it’s a very good one time investment. Think about it.