GR47 gsm GM47 .GR64 available . gsm modem gprs modem GR47 GSM MODEM GM47 GSM ModuleGSM Module GR47FeaturesDual-band GSM / GPRS moduleExecutive ETSI GSM Phase 2 + standardClass 4 (2W @ 900MHz)Class 1 (1W @ 1800/1900MHz)External 3V/5V SIMPower Supply3,6 VDC 1ACommunication mean 300mA (0% DTX, Pmax)3,5 mA when idleExternal dimensions: 58X32X6mmWeight: 20g (including shielding)Short Message ...