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SIM900 GSM GPRS shield is based on a chip of SIM900 from SIMCOM and is compatible with Arduino and its clones
there is a sim card jack and a holder for a 3V CR1220 battery for the RTC (real-time clock)
You may visit the official Lafvin website for tutorials
Microcontroller: ATmega2560
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Arduino MEGA R3 Improved Version CH340 + USB Cable SIM900 GSM GPRS shield isThe Mega 2560 CH340 improvement version is an update for the Arduino Mega, which it replaces. The board is a microcontroller board based on the ATmega2560 16AU . It has 54 digital input output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller,
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