SIM 800L is a Mini-GSM module, the 2G GSM - and GPRS-data. Now with things mobile Sim card in the Bundle. The module has a small size and low power consumption. Twice as large as a coin and 1mA in Sleep Mode.
It uses a serial interface communication, supported 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT commands. In addition, it supports the A-GPS technology, which helps to maintain the indoor position of the mobile radio network.
Compatible with Arduino Uno, Arduino Mini, Raspberry Pi. A Mini-GSM antenna is supplied, an external power supply is required.