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Quad-Band GSM/GPRS, 850/900/1800/1900MHz

Nhà sản xuất: Simcom

Hết hàng

Số lượng mua

0 Phản hồi 5072 lượt xem ROHS

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SIM548 module is a Quad-Band GSM/GPRS enabled 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.

General features: 

  • Quad-Band 850/900/1800/1900MHz
  • GPRS multi-slot class 10
  • GPRS mobile station class B
  • Compliant to GSM phase 2/2+:
    • Class 4(2W @ GSM850/GSM900MH)
    • Class 1(1W @ GSM1800/GSM1900MHz)
  • Control via AT commands (GSM 07.07 and 07.05 and SIMCOM enhanced AT commands)
  • SIM application tool kit
  • Low power consumption• 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°C
  • Dimensions: 55*33*8.2mm

Specifications for SMS via GSM / GPRS

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

Specifications for audio

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

Specifications 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 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
    • NMEA-0183
    • SiRF binary
    • RTCM SC-104
  • Crystal oscillator (TCXO), temperaturecompensated with frequency stability of ±0.5ppm
  • Memory: 4 Mb flash and 1Mb SRAM


  • 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&GP

Specifications for fax

  • Group 3, class 1


 PDF Download >>
 Hardware Specifications
 PDF Download >>
 AT Command Set
 PDF Download >>
 EVB User Guide
 PDF Download >>
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