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
•Weight: - 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
•Tricodec - 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
•USSD
•Non transparent mode
•PPP-stack
•Integrated TCP/IP stack Compatibility •AT cellular command interface Specification for GPS
•Receiver type   - 42-channel - GPS L1 C/A code, - High-performance STE engine
•Sensitivity - Tracking:               -160 dBm - Cold starts :           -143 dBm
•Time-To-First-Fix   - Cold starts:           30s (typ.) - Hot starts:               1s (typ.)
•Accuracy -Horizontal position : <2.5m CEP
•Power consumption (GSM engine in idle mode) - Acquisition           77mA - Tracking               76mA Interfaces
•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