Real Time Home Security System using GSM Technology-An Anti-theft System ... which will initiate a telephone call when push button switch S2 is activated by the user (or by another electronic module).

He decided to go with the low-cost SIM800L GSM modem, but as it only works on 2G networks, provisions have been made in the board design to swap it out for a more modern module should you desire.

The SPCN310.000 GSM module can be assigned to any mobile network by the insertion of a standard SIM card. The modem is compatible with the complete range of SPC panels and plugs directly on the main ...

Beta-testing Matrix GSM In WashingtonI was asked to take part in a test of the Matrix with GSM module for Comrex in the heart of the nation’s capital. The technical folks in Devens, Mass., were ...

This tasty proof-of-concept cellular sandwich is made by adding a Sim900 GSM/GPRS module, which communicates via UART, to the Pi/TFT hardware while using a piece of foam core board in the middle ...