ELPROMA (www.elpromaelectronics.com) – the EU manufactures (1) Wireless M2M telemetry; (2) NTP/IEEE1588 synchronization systems; (3) SAGNAC effect fiber optic IMU sensors. The company provides wireless TSN routers/modems, PTP/NTP Time Servers, FO sensors - for supporting critical infrastructures of smart-grid, 5G telo, smart-city monitoring, industry 4.0, traffic control, financial and public administration, gas & oil industry. The latest Sagnac optical interferometer (IMU sensor) is a dual-use: (1) seismograph for rotational seismology and (2) FOG optical gyroscope.  The sensors have a unique precision of 10E-9 rad/s sensing rotary velocity, angle change, tinny vibrations, and position changes.