... 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 ... tiny configuration of 24mm x 24mm x 3 mm, SIM900 can fit almost all the space requirements in your ...