General features
• Quad-Band 850/900/1800/1900MHz
• GPRS multi-slot class 12/10
• GPRS station class B
• Compliant to GSM phase 2/2+
  -Class 4 (2W @ 850/900MHz)
  -Class 1 (1W @ 1800/1900MHz)
• Control Via AT Commands(3GPP TS 27.007, 27.005 and SIMCOM 
  enhanced AT Commands)
• Supply voltage range: 3.4V~4.4V
• Low power consumption
• Operation temperature: -40℃~ +85℃
• Dimension: 24*24*2.6mm
• Weight: 3.3g


SIM808无线通讯模块

Specifications for Data transfer
• GPRS class 12: max.85.6Kbps(downlink/uplink)
• PBCCH support
• Coding schemes CS 1,2,3,4
• PPP-stack
• USSD

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

Software features
• 0710 MUX protocol
• Embedded TCP/UDP protocol
• FTP/HTTP
• MMS
• POP3/SMTP
• DTMF
• Jamming Detection
• Audio Record
• SSL

Specifications for GPS
• Receiver type
  -22 tracking /66 acquisition -channel
  -GPS L1 C/A code                             
• Sensitivity
  -Tracking: -165 dBm
  -Cold starts: -148 dBm
• Time-to-First-Fix
  -Cold starts: 32s(typ.)
  -Hot starts: <1s
  -Warm starts: 3s
• Accuracy
  -Horizontal position: <2.5m CEP


Interfaces
68 SMT pads including:                                                                      
• Analog audio interface
• Serial interface
• USB interface
• SIM Card interfaces
  -SIM Card: 3V/1.8V                                                                       
• RTC backup
• Keypad interface
• GPIO
• ADC
• GSM Antenna pad
• GPS Antenna pad
• Bluetooth Antenna pad