FOSREM: The Fibre-Optic System for Rotational Events & Phenomena Monitoring by Elproma is a mobile, Sagnac interferometer-based solution for real-time monitoring of rotational vibrations. Optimized for high sensitivity, it detects irregular movements in structures like wind turbines, bridges, and high-rise buildings caused by strong winds, tectonic shifts, or earthquakes. Featuring autonomous signal processing and VPN-enabled telemetry, FOSREM delivers precise, remote diagnostics for enhanced safety and reliability in critical infrastructure.