1)SIM900 GSM GPRS module 2)Voice, SMS, Data, and Fax application 3)especially for slim and compact demands of design SIM900 GSM GPRS module, Quad-band, industrial standard Sim900,SIM900 Simcom wireless module,Simcom modules,modulesFeaturing an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with ...