SIM300D / 340D Module

 Detailed Introduce:
                   Tri-Band GSM/GPRS 900/1800/1900MHz or Quad-Band GSM.GPRS
                    850/900/1800/1900MHz 
                   GPRS multi-slot class 10/8 
                   GPRS mobile station class B 
                   Compliant to GSM phase 2/2+ 
                   Class 4 (2W @ 900MHz) 
                   Class 1 (1W @1800/1900MHz) 
                   Dimensions: 33mmx33mmx3.0mm 
                   Weight: 7.8g 
                   Control via AT commands (GSM 07.07, 07.05 and SIMCom enhanced AT Commands) 
                   SIM application toolkit 
                   Supply voltage range: 3.4V - 4.5V 
                   Low power consumption 
                   Normal operation temperature: -20

General features:
Tri-Band GSM / GPRS 900 / 1800 / 1900MHz (SIM300D)
Quad-Band GSM / GPRS 850 / 900 / 1800