The A6 GSM Module is a mini GSM/GPRS core development board based on GPRS A6 module. It supports dual-band GSM/GPRS network, available for GPRS and SMS message data remote transmission. The board features compact size and low current consumption. With a power saving technique, the current consumption is as low as 3mA in sleep mode. It communicates with the microcontroller via UART port, supports command including GSM 07.07, GSM 07.05 and Ai-Thinker enhanced AT Commands.