you need rs232 cable , gsm | Microcontroller › 8051 › interface GSM module with 8051 microcontroller by ssanthosh243 › you need rs232 cable , gsm December 2, 2011 at 3:04 am #6904 DexterParticipant you need rs232 cable , gsm modam, 8051 controller kit ,etc with a sim card activated
