SIM800L GSM / GPRS module is based on SIM800L by SIMCOM. It has the same dimensions and shape like ESP seriesboards. Also it is powered by DC 6V supply. making it suitable for applications where size matters.
SIM800L GSM / GPRS module supports quad-band GSM/GPRS network including SIM800L GPRS and SMS message data. The SIM800L GSM / GPRS board features compact size and low current consumption. With power saving technique, the current consumption is as low as 1mA in sleep mode. It communicates with microcontroller via UART port, supports command. It’s operating voltage is 5 ~ 6V.