Arduino UNO R3 Official Genuine Version + USB Cable so you can directly connect

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

Operating Voltage: 5V

SIMR SIM900A RXD

Support low power consumption mode: 100mA @ 7V-GSM mode

convenient development two times

Arduino UNO R3 Official Genuine Version + USB Cable so you can directly connectArduino 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.