Detailed Product Description

 GSM GPRS GPS "SIMCOM" SIM548  wireless module 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:
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

Application

wireless Modem 

Fix wireless phone

Wireless Fax

......

Accessory

Module Connector,  RF Cable,   Antenna,   SIM Card Holder.......