SIM508/548 module is a Tri-Band/Quad-Band GSM/GPRS-enabled module that is also equipped with AGPS technology. The compact design of the SIM508/548 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.

The combination of both technologies can fit almost all the space requirement in your applications, it allows valuable asset to be tracked seamlessly at any location and anytime with signal coverage.

Physical features
  Overall dimensions: 55mm x 34mm x 3mm
  Weight: approx.12g
  Normal operation temperature: -30 °C to +80 °C
  Restricted operation temperature: -40 °C to -30 °C and +80 °C to +85 °C
  Storage temperature: -40°C to +85°C

GSM/GPRS specifications
  Tri-Band GSM 900/1800/1900MHz, or Quad-Band GSM 850/900/1800/1900 MHz
  GPRS multi-slot class 10/8
  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: 3.4V - 4.5V

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