Quad-Band Gprs Modem RS-232 for Us/Canada

so here we have a sim 908 GSM module and this module is very beautifully designed and I have seen a lot of in a market but they lack the design beauty and they make it very difficult in order to connect to the computers and give the SMS or call to the cellphone right so let me just introduce you how this kit is designed and then I would going to show you how to give the SMS or give the call or send the SMS using the sim 908 GSM module so what you see here at the couple of pins here like a ground then tx/rx and VCC these are the four pins could be used when you want this sim 900 a module to connect to the arduino okay and on the other side of this module you see there is a standard rs-232 connector where you can connect a db9 rs-232 or db9 connector to connect to the computer okay so you have a two ways either you use the spins okay tx/rx VCC and ground or you can use this rs-232 standar