Model Number

wireless GSM/GPRS/GPS module SIMCOM SIM508/548

General features：Tri-band GSM/GPRS&GPS 900/1800/1900MHz(SIM508) 
                                   Quad-band GSM/GPRS&GPS 850/900/1800/1900MHz
                                   (SIM548) 
                                   Dimensions: 34mm x 55mm x 3.0mm
                                   M2M board-to-board connector 
                                                                                       

Application： 1:Vehicle carries and ship carries security 
                         2:Data acquisition

Accessory：Module Connector、RF Cable、 Antenna、SIM Card Holder


Detailed Introduce：
                   Physical features: 
                   · Overall dimensions: 34mm x 55mm x 3.0mm
                   · Weight: approx.12g
                   · Normal operation temperature: -20°C to +55°C
                   · Restricted operation temperature: -30°C to -20°C and +55°C to +80°C
                   · Storage temperature: -40°C to +85°C
                   GSM/GPRS specifications:
                   · Tri-Band 900/1800/1900MHz or Quad-Band 850/900/1800/1900MHz
                   · GPRS multi-slot class 10/8
                   · GPRS mobile station class B
                   · Compliant to GSM phase 2/2+
                   -Class 4(2W  GSM 900MHz)
                   -Class 1(1W  GSM 1800/GSM1900MHz)
                   · Control via AT commands (GSM 07.07 and 07.05 and SIMCom enhanced
                    ATcommands) 
                   · SIM application tool kit
                   · Low power consumption
                   · Supply voltage range: 3.4V - 4.5V
                   Specifications for GPS 
                   · Receiver 20 channels, L1 1575.42MHz, C/A code 1,023MHz chip rate 
                   · Accuracy Position 10 m CEP
                   · without SA/Velocity 0.1m/s
                   · without SA/Time 1μs synchronized to GPS time
                   ·  DGPS accuracy 1 to 5m, typical, 0.05m/s, typical
                   · 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
                   · Operating voltage 3.3V DC ±5%
                   · Low power consumption about 160mW at 3.3V (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