replica watches fake watches

Home    |    Model Comparison    |     Inquiry    |     Contact Us    |   Site Map      |     

                                                                                                                           Main Product:RF Module

Online Contacts
Products-GSM/GPRS Module-SIM908 GPRS+GPS Module
Inquiry Now   |    Download PDF


SIM908 module is a complete Quad-Band  GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will  significantly save both time and costs  for customers to develop GPS enabled applications.
Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

General features
Quad-Band 850/900/18001900MHz
GPRS multi-slot class 10
GPRS mobile station class B
Compliant to GSM phase 2/2+
  -  Class 4 (2 W @ 850/900 MHz)
  - Class 1 (1 W @ 1800/1900MHz)
Control via AT commands (GSM 07.07 ,07.05   and SIMCom enhanced AT Commands)
SIM application toolkit
Supply voltage range:
  -GPRS: 3.2 ~ 4.8 V
  -GPS: 3.0 ~ 4.5V
Low power consumption
Dimensions: 30*30*3.2mm
  - SIM908:5.2g
  - SIM908-C:11.1g
Operation temperature:
  -40 'C to +85 'C

Specifications for SMS via GSM / GPRS
Point-to-point MO and MT
SMS cell broadcast
Text and PDU mode

Specifications for audio
  - Half rate (HR)
  - Full rate (FR)
  - Enhanced Full rate (EFR)
Hands-free operation
Echo cancellation
Specifications for data transfer
GPRS class 8/10: max. 85.6 kbps (downlink)
PBCCH support
Coding schemes CS 1, 2, 3, 4
CSD up to 14.4 kbps
Non transparent mode
Integrated TCP/IP stack
AT cellular command interface
Specification for GPS
Receiver type
  - 42-channel
  - GPS L1 C/A code,
  - High-performance STE engine 
  - Tracking:               -160 dBm
  - Cold starts :           -143 dBm
  - Cold starts:           30s (typ.) 
  - Hot starts:               1s (typ.)
  -Horizontal position : <2.5m CEP
Power consumption (GSM engine in idle mode)
  - Acquisition           77mA
  - Tracking               76mA

80-pad with SMT type
Interface to external SIM 3V/ 1.8V
Dual analog audio interfaces
SPI interface
RTC backup
Charge interface
A serial interface and a debug interface for  GSM/GPRS
Debug interface for GPS NMEA information output
Two separate antenna connectors for GSM/GPRS&GPS