SIM800L is a miniature cellular module which allows for GPRS
transmission, sending and receiving SMS and making and receiving voice calls.
Low cost and small footprint and quad band frequency support make this module
perfect solution for any project that require long range connectivity. After
connecting power module boots up, searches for cellular network and login
automatically. On board LED displays connection state (no network coverage -
fast blinking, logged in - slow blinking).
NOTICE: Be prepared to handle huge
power consumption with peek up to 2A. Maximum voltage on UART in this module is
2.8V. Higher voltage will kill the module.
Tutorial: https://lastminuteengineers.com/sim800l-gsm-module-arduino-tutorial/
Specification
Set includes:
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