The SIM300D 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 industrial 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
 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: -30 °C to -40 °C and +80 °C to +85 °C
  Storage temperature: -45°C to +90°C

Specifications for fax
  Group 3, class 1

Specifications 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 mode

Specifications for SMS via GSM
  Point-to-point MO and MT
  SMS cell broadcast
  Text and PDU mode

Specifications for voice
Tricodec
Half rate (HR)
Full rate (FR)
Enhanced Full rate (EFR)
Hands-free operation (Echo suppression)

Interfaces
  Interface to external SIM 3V/1.8V
  Two analog audio interfaces
  RTC backup
  Serial interface and debug interface
  LCD interface
  Keypad interface
  Antenna connector and antenna pad
  GPIO