Arduino UNO R3 Official Genuine Version + USB Cable Accuracy: ~2

Accuracy: ~2

Power to the output current of 800 ma

Operating Voltage: 5V

There are so many GPRS/GSM modules on the market which need to add 5V regulator and level converter circuit

so you can directly connect it to Arduino or another minimum system with 5V of the voltage level

Arduino UNO R3 Official Genuine Version + USB Cable Accuracy: ~2Arduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53 R0), a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with a AC to DC adapter or battery to get started.