Place the SIM800L library folder into your \Documents\Arduino\libraries folder ... If you define and pass reset pin of your board you can reset GSM by external reset pin of the SIM800l GSMTime(time) ...

This repository contains all the resources and files related to a custom-designed educational shield based on the Quectel M66 GSM module, fully compatible with the Arduino UNO. All PCB designs across ...

👍Support WIFI and GSM dual network(you can use GSM if there is no WIFI, The WIFI only can work with 2.4G, not work with 5G), Different alarm status: away arm, home arm, delay arm and timely arm ...