SIM800L GPRS Moduledule

From the shop's description

This GSM / GPRS module is based on SIM800L by SIMCOM. It 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 3.7 ~ 4.2V, peak current is 1A. Features Quad-band 850/900/1800/1900MHz Make and receive voice calls using a headset or an external 8 speaker and electret microphone Send and receive SMS messages Send and receive GPRS data (TCP/IP, HTTP, etc.) Scan and receive FM radio broadcasts AT command interface with "auto baud" detection Lead out buzzer and vibrational motor control port Input Voltage：DC 3.7-4.2V. SIM800L datasheet SIM800L GPRS GSM Arduino tutorial