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Product description

SIM908 module is a complete Quad-Band GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will significantly save both time and costs for customers to develop GPS enabled applications. Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

Technical specifications

General features

  • Quad-Band 850/900/18001900MHz
  • GPRS multi-slot class 10
  • GPRS mobile station class B
  • Compliant to GSM phase 2/2+
    -Class 4 (2 W @ 850/900 MHz)
    -Class 1 (1 W @ 1800/1900MHz)
  • Control via AT commands (GSM 07.07 ,07.05 and SIMCom enhanced AT Commands)
  • SIM application toolkit
  • Supply voltage range:
    -GPRS: 3.2 ~ 4.8 V
    -GPS: 3.0 ~ 4.5V
  • Low power consumption
  • Dimensions: 30*30*3.2mm
  • Weight: 5.2g
  • Operation temperature:
    -40 °C to +85 °C


Specification for SMS via GSM / GPRS

  • Point-to-point MO and MT
  • SMS cell broadcast
  • Text and PDU mode

Specification for audio

  • Tricodec
    -Half rate (HR)
    -Full rate (FR)
    -Enhanced Full rate (EFR)
  • Hands-free operation
  • Echo cancellation

Specification for data transfer

  • GPRS class 8/10: max. 85.6 kbps (downlink)
  • PBCCH support
  • Coding schemes CS 1, 2, 3, 4
  • CSD up to 14.4 kbps
  • USSD
  • Non transparent mode
  • PPP-stack
  • Integrated TCP/IP stack


  • AT cellular command interface

Specification for GPS

  • Receiver type
    - 42-channel
    - GPS L1 C/A code
    - High-performance STE engine
  • Sensitivity
    -Tracking: -160 dBm
    -Cold starts : -143 dBm
  • Time-To-First-Fix
    -Cold starts: 30s (typ.)
    -Hot starts: 1s (typ.)
  • Accuracy
    -Horizontal position : <2.5m CEP
  • Power consumption (GSM engine in idle mode)
    -Acquisition 77mA
    -Tracking 76mA


  • 80-pad with SMT type
  • Interface to external SIM 3V/ 1.8V
  • Dual analog audio interfaces
  • SPI interface
  • RTC backup
  • Charge interface
  • A serial interface and a debug interface for GSM/GPRS
  • Debug interface for GPS NMEA information output
  • Two separate U.FL antenna connectors for GSM/GPRS&GPS


  • CE
  • ROHS

Recommended accessories

Following accessories are recommended to be purchased along with this product as they might be required for operation and may not be included in this product.
SIMCom SIM908 S2-1047K-Z0M01 SIMCom SIM908 accessories SIMCom SIM908 datasheet SIMCom SIM908 images SIMCom SIM908 price