gsm module

Sim800L is a GSM/GPRS module. You can send a message, make a call, transfer data though the GPRS or something else.
Overview
This SIM800l module has a set of TTL level serial interface, a set of power supply interface. Besides, there are a set of ntenna interface on this module.

The chip of SIM800L basic features
SIM800H is a complete Quad-band GSM/GPRS solution in a LGA type which can be embedded in the custome