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SIM508 SIM548 SIM548C GSM GPRS module,  Tri-band or Quad-band

     Designed for global market, SIM548 is a Quad-band GSM/GPRS engine that works on frequencies GSM 850MHZ, EGSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz and supports also GPS technology for satellite navigation. SIM548 provides GPRS multi-slot class10 / class 8 (option) capabilities and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny configuration of 55mm x 34mm x 3.0 mm, SIM548 can fit almost all the space requirement in your application, such as smart phone, PDA phone, GPS hand-held device and other mobile device, or applications of AVL (Automated Vehicle Location), location service and so on.