The SIM900 is a complete Quad-band GSM/GPRS solution in a
SMT module which can be embedded in the customer applications.
Featuring 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 low power
consumption.SIM900 can fit almost all the space requirements in your M2M
application, especially for slim and compact demand of design.