Zenner International GmbH & Co.KG

ZENNER International GmbH & Co. KG, headquartered in Saarbrücken, Germany, brings over a century of measurement technology expertise to smart city and utility digitalization. Founded in the early 1920s, ZENNER manufactures water, heat, and gas meters alongside a comprehensive IoT infrastructure platform. The company produces more than 12 million measuring devices annually and operates the world's largest LoRaWAN network with over 11 million connected sensors across 100+ countries. ZENNER's water meter portfolio spans residential multi-jet meters (MTKD dry dial, MNK wet dial), rotary piston meters (RTKD, RNK), ultrasonic meters (IUWS B.One), Woltman bulk meters (WPD, WSD, WPVM), and specialty apartment meters (Minomess, Minolist). Communication modules under the B.One platform support LoRaWAN, wireless M-Bus, and wired M-Bus protocols for remote reading without property access. The Atmos gas meter line covers residential through industrial applications including the Active Safety smart meter with built-in shut-off valve. Zelsius thermal energy meters handle heating and cooling measurement with ultrasonic and mechanical flow sensors. ZENNER also provides IoT environmental sensors including CO2 monitors and smoke detectors, mobile reading systems, and the B.One digital platform with AI analytics. The company serves water utilities, municipal operations, property managers, and industrial customers worldwide.