Based on GPS GPRS / GSM SIM808 module, this shield can be used with Arduino (UNO, Leonardo, Fishino, NUCLEO, XNUCLEO) to create IoT projects (Internet of things) such as data acquisition, remote controls, GPS locators, etc. Supports calls and SMS (headphone jack and microphone available) - communication is via AT commands. It has a slot for micro SD card (not included), reset button, SMA connector and U.FL for GPS, GSM and Bluetooth antenna, status LED for power supply and GPS Fix.

Note: the UNO PLUS in the photo is NOT included.

1. SIM808 module
2. MIC29302 power chip
3. CP2102: USB TO UART converter
4. SMF05C: TVS diode
5. 1N5408: onboard rectifier
6. SIM808 functional pins
7. Arduino expansion connector
8. USB TO UART interface
9. DC power jack
10. GPS antenna connector
11. Bluetooth antenna connector
12. Firmware upgrade interface
13. GSM antenna connector
14. SIM card slot
15. 3.5mm earphone/mic jack
16. GPS status indicator
17. CP2102 UART Tx/Rx indicator
18. NET indicator:
    - flashes fast when the module starts up
    - flashes slowly after GSM register succeed
19. Power indicator
20. Power switch
21. SIM808 control button: press the button and hold for 1s, to startup/shutdown the SIM808
22. Reset button
23. UART selection switch, select controlling the SIM808 via:
    - CP2102
    - UART pins of Arduino interface
24. SIM808 UART configuration:
    - SIM_TX: SIM808 UART TX
    - SIM_RX: SIM808 UART RX
25. IOREF power selection: configure the UART voltage level

• Arduino connectivity, compatible with UNO, Leonardo, NUCLEO, XNUCLEO
• Onboard USB TO UART converter CP2102 for UART debugging
• 5 x LEDs for indicating the module working status
• Onboard voltage level converter, supports both 3.3V and 5V systems
• SIM card slot for 1.8V/3V SIM card
• Baudrate auto detection (1200bps ~115200bps)
• Bluetooth 3.0， supports data transferring through Bluetooth
• RTC with power supply interface
• Firmware upgradable via USB
• Control via AT commands (3GPP TS 27.007,27.005, and SIMCOM enhanced AT Commands)
• Supports SIM application toolkit: GSM 11.14 Release 99
• Operating voltage: 6 ~ 12V
• Operation temperature: -40 °C ~ +85 °C
• Storage temperature: -45 °C ~ +90 °C

• Band
  • GSM 850/EGSM 900/DCS 1800/PCS 1900 MHz
  • Quad-band auto search
  • Compliant to GSM phase 2/2+
• Emitting power
  • Class 4 (2W @ GSM 850/EGSM 900 MHz)
  • Class 1 (1W @ DCS 1800/PCS 1900 MHz)
• GPRS connectivity
  • GPRS multi-slot class 12 (default)
  • GPRS multi-slot class 1~12 (configurable)
• GPRS data feature
  • Downlink speed: max 85.6kbps
  • Uplink speed: max 85.6kbps
  • Coding schemes: CS-1\CS-2\CS-3\CS-4
  • Supports PAP (Password Authentication Protocol) for PPP connection
  • Embedded TCP/IP protocol
  • Supports PBCCH
  • Supports CSD transmission speed: 2.4/4.8/9.6/14.4 kbps
  • Supports USSD
• SMS
  • Supports: MT/MO/CB/Text/PDU mode
  • SMS storage: SIM card
• Audio
  • Voice encode/decode mode: Half Rate\Full Rate\Enhanced Full Rate\Adaptive muti rate
  • Supports echo cancellation
  • Supports noise reduction

• Receiver type
  • 22 tracking channels
  • 66 acquisition channels
  • GPS L1 C/A code
• Sensitivity
  • Tracking: -165 dBm
  • Cold starts : -148 dBm
• Time-To-First-Fix
  • Cold starts : 30s (typ.)
  • Hot starts : < 1s
  • Warm starts: 28s
• Accuracy
  • Horizontal position : <2.5m CEP

• GSM/GPRS/GPS Shield (B) x1
• GSM Antenna x1
• GPS External Antenna (B) x1
• Bluetooth Antenna x1
• Power adapter EU standard x1
• USB type A plug to micro plug cable x1

• www.waveshare.com/wiki/GSM/GPRS/GPS_Shield_(B)