The module is the Walter, by DPTechnics out of Belgium. It’s fully open-source and contains a ESP32-S3 for WiFi and BLE plus a Sequans Monarch chip for GSM and GNSS connectivity.

Real Time Home Security System using GSM Technology-An Anti-theft System! This project deals with the design & development of a theft control system for home, which is being used to prevent/control ...

Motorola has announced the deployment of its GSM communications network for Bharat Sanchar Nigam (BSNL), covering 417 towns, cities, villages in the four southern states of India ...