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).
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
The SIM900A GSM GPRS Wireless Extension Module is a versatile communication module designed for SMS, voice calls, and GPRS data transmission. It supports quad-band frequencies, making it ideal for IoT projects, remote monitoring, and wireless communication applications. With its compact design, onboard antenna, and easy integration, it’s perfect for Arduino, Raspberry Pi, and microcontroller-based projects.