The dry-running single-inlet residential water meter is intended for measuring and recording hot water consumption . The water meter is characterized by a high-quality, durable construction and high measurement accuracy , which manifests itself not only during a constant flow of water, but especially during the start and end of the water flow into the water battery. This feature is especially welcome when using lever batteries. The water meter is equipped with a radio module for transmitting information about the size and direction of the flow.