SIM800L is a compact communication module that allows you to send SMS, make voice calls and connect to the internet over GSM/GPRS networks. It works with a standard Nano SIM card and is easily integrated with Arduino or ESP series boards via AT commands. It is preferred for IoT projects in remote locations such as field irrigation systems or vehicle tracking devices in areas outside Wi-Fi range. Since the supply voltage is sensitive to sudden changes, it is recommended to use a power supply with sufficient current capacity for stable operation.
