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Product description

SIM548C module is a Quad-Band GSM/GPRS enabled a compact plug-in module that is also equipped with GPS technology for satellite navigation. The compact design of the new SIM548C makes it easy to integrate GSM/GPRS & GPS as an all-in-one solution. You will save significantly both time and cost for the integration of additional hardware components.

Featuring an industry-standard interface and GPS function, the combination of both technologies allows goods, vehicles and people to be tracked seamlessly at any location and anytime.

Technical specifications

Physical interfaces

  • Overall dimensions: 55*33*8.2mm
  • Weight: approx.16.5g
  • Normal operation temperature:
    -30 °C to +80°C

GSM / GPRS specification

  • 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
  • SIM application toolkit
  • Supply voltage range 3.4 ... 4.5 V
  • Low power consumption

Specification for SMS

  • 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

Specification for Fax

  • Group 3, class 1


  • 60-pin DIP connector
  • Multiplexer
  • Interface to external SIM 3V/ 1.8V
  • Dual analog audio interfaces
  • AT commands via GSM/GPRS serial interface
  • Embedded SIM card holder
  • LCD interface
  • RTC backup
  • Charge interface
  • A serial interface and a debug interface for GSM/GPRS
  • Dual serial interface for GPS
  • Two separate antenna connectors for GSM/GPRS&GPS, and two antenna pads for GSM/GPRS&GPS


  • AT cellular command interface

Specification for GPS

  • Receiver 20 channels, L1 1575.42 MHz, C/A code 1,023 MHz chip rate
  • Accuracy Position 10m CEP
    without SA/Velocity 0.1m/s,
    without SA/Time 1μs synchronized to GPS time
  • Date WGS-84
  • Acquisition rate (TTFF defined at 95% of first position local station)
    Hot start<1s, average, open sky
    Warm start<38s, average, open sky
    Cold start<42s, average, open sky
  • Support AGPS
  • Operating voltage 3.3V DC ±5%
  • Low power consumption about 200mW at 3.3V
  • Protocols
    SiRF binary
    RTCM SC-104
  • Crystal oscillator (TCXO), temperature compensated with frequency stability of ±0.5ppm
  • Memory: 4 Mb flash and 1Mb SRAM

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 SIM548C S2-10219-E0J05 SIMCom SIM548C accessories SIMCom SIM548C datasheet SIMCom SIM548C images SIMCom SIM548C price