SIM808 Shield is an Arduino compatible shield that based on SIM808 module, it offers 2G GSM and GPRS data along with GPS technology for satellite navigation.
What’s it for:
Receive GPS data and A-GPS data
Send and receive SMS messages
Send and receive GPRS data (TCP/IP, HTTP, etc.)
Make and receive phone calls (External microphone and speaker is required)
Output PWM , buzzer vibrational motor control
Read value of analog voltage
Features:
Compatible with Arduino Uno, Arduino Leonardo, Arduino Mega
Powered via Arduino USB connection or Arduino external power supply
Communicates with Arduino via UART-TTL and digital input/output.
Integrated GPS/CNSS and supports A-GPS
Supports 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands