Sales of dual-band quad-band GSM / GPRS module SIM900 SIM908

• Quad-band 850/900/1800/1900MHz
• GPRS multi-slot class 10 standard
• GPRS mobile station class B standard
• meet the GSM phase 2/2 + standards
   - Class 4 (2 W @ 850/900 MHz)
   - Class 1 (1 W @ 1800/1900MHz)
• AT command control (GSM 07.07, 07.05 and SIMCom enhanced AT command set)
• SIM Application Toolkit
• Supply voltage range:
     -GPRS: 3.2 ~ 4.8 V
     -GPS: 3.0 ~ 4.5V
• Low power consumption
• Size: 30 * 30 * 3.2mm
• Weight:
   - SIM908: 5.2g
• Operating Temperature:
   -40 ° C to +85 ° C
SMS
• Point MO and MT
• SMS cell broadcast
• Text and PDU mode
Voice
• Three rate
   - Half Rate (HR)
   - Full-rate (FR)
   - Enhanced Full Rate (EFR)
• Hands-free function
• Support for echo suppression algorithm
GPRS data
• GPRS class 8/10: Maximum 85.6 kbps (downlink rate)
• Support PBCCH
• Coding schemes CS 1, 2, 3, 4
• PPP-stack
CSD data
• CSD up to 14.4 kbps
• USSD
• Non-transparent transmission