-low power -Tri-band/quad-band -good quality with low price -GSM GPRS module -control by AT commands

The SIM300D/340D is a complete Tri-Band/Quad-Band GSM/GPRS solution in a SMT module. SIM300D/340D with a tiny configuration can fit almost all the space requirements in your M2M applications, especially for slim and compact handset applications.   - SMT type suit for customer applications   - An embedded powerful TCP/IP protocol stack   - Based upon mature and field-proven platform, backed up by our support service, from definition to design and production General features   - 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 @ 850/900 MHz)      – Class 1 (1W @ 1800/1900MHz)   - Dimension: 33mm x 33mm x 3mm   - Weight: 7.8 g   - 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: -30 °C to +80 °C  - Restricted operation temperature: -40 °C to -30 °C and +80 °C to +85 °C  - Storage temperature: -45°C to +90°CSpecifications for fax  - Group 3, class 1Specifications for data:  - PBCCH support  - GPRS class 10: max. 85.6 Kbps (downlink)  - PPP-stack  - Coding schemes CS 1, 2, 3, 4  - CSD up to 14.4 kbps  - USSD  - Non transparent modeSpecifications for SMS via GSM  - Point-to-point MO and MT  - SMS cell broadcast  - Text and PDU modeSpecifications for voice  - Tricodec    – Half rate (HR)    – Full rate (FR)    – Enhanced Full rate (EFR)  - Hands-free operation (Echo suppression)

SIMCOM SMT type GSM GPRS module SIM300D/SIM340D