




📡 Stay connected, stay ahead — cellular power in your hands!
The GSM/GPRS SIM900 Open Source Shield offers quad-band global cellular connectivity, enabling voice calls, SMS, and wireless data communication via a simple AT command interface. Designed for Arduino UNO and MEGA, it empowers developers to integrate mobile network capabilities into their projects with full IP stack support and open-source flexibility.
D**C
BAD, do not buy for project
Came with just Antenna. No information about needing or what power supply you need. Pins came in bent. You'll end up guessing what power supplies you need. No jumper cap for the D0, D1 Pins.
Trustpilot
2 months ago
3 weeks ago