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SIM548C module is a compact Quad-Band GSM/GPRS-enabled module that is also equipped with GPS technology for satellite navigation. The compact design of the 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 valuable asset to be tracked seamlessly at any location and anytime with signal coverage.
General features
  - Quad-Band GSM 850/900/1800/1900MHz
  - GPRS multi-slot class 10
  - GPRS mobile station class B
  - Compliant to GSM phase 2/2+
     - Class 4(2W @ GSM850/900MHz)
     - Class 1(1W @ GSM1800/1900MHz)
  - 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 3.4…4.5 V
  - 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
  - Dimension: 50*33*8.8mm

Specifications for GPS
  - Receiver 20 channels, L1 1575.42 MHz, C/A code 1,023 MHz chip rate
  - Accuracy Position 2.5 m CEP
     –without SA/Velocity 0.1 m/s,
     –without SA/Time 1 μs synchronized to GPS time
  - Position with DGPS/SBAS: 2.0 CEP
  - Date WGS-84
  - Acquisition rate (TTFF defined at 95% of first position local station)
     – Hot start < 1 s, average, open sky
     – Warm start: 35 s, average, open sky
     – Cold start: 35 s, average, open sky
  - Support AGPS
  - Operating voltage 3.3 V DC ±5%
  - Low power consumption 160mW at 3.3 V (full power)
  - Protocols
     – NMEA-0183
     – SiRF binary
     – RTCM SC-104
  - Crystal oscillator (TCXO), temperature compensated with frequency stability of ±0.5 ppm
  - Memory 4 Mb flash and 1Mb SRAM

Interfaces
  - 60-pin DIP connector
  - Interface to external SIM 3V or 1.8V
  - Dual analog audio interface
  - AT commands via serial interface
  - Embedded SIM card holder
  - LCD Interface
  - RTC Backup
  - Charge interface
  - Serial interface and Debug interface
  - Dual serial interfaces for GPS
  - Two separate antenna connectors for GSM/GPRS & GPS and two antenna pads for GSM/GPRS & GPS