Power Module

The Power module is responsible for monitoring and controlling the power-on state of the GSM modem. It can power the modem on, power it off, or restart it.
The “PwrKey Based” Power module works with most modems (SIMCom, uBlox, Quectel) and uses 2 GPIO lines: “PwrKey” and “Status”. An optional “Reset” line can also be connected as a last-resort failsafe. Some modems may not use the “PwrKey” technique, and a different library module is required to work with these.