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 to +80
Restricted operation temperature: -40 to -30 and +80 to +85
Storage temperature: -40 to +85

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 1μ S 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 PLUS/subtract 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 PLUS/subtract 0.5ppm
Memory: On-chip 4Mbit FLASH and 1Mbit SRAM