Regulatory approval for residential and commercial use of Domusnext® 2.0 MMU6 H2 and MMU40 H2 meters. Padua, March 3, 2022 – SIT, a multinational listed on the Euronext Milan segment of Borsa Italiana that creates smart solutions for environmental control and consumption measurement, has completed the certification process for residential and commercial meters operating with 100% green hydrogen.