The features of 511B and 515A models include valves which consist of digital water meters. They use ultrasonic metering technology along with electromagnetic or electric valves. The digital display provides real-time consumption data, while the valve also allows remote control of the water supply for prepayment, leak, and unauthorized usage cutoff. Ensured precision of the valve guarantees control over flow regulation to maintain stability with a response time of ≤2 seconds and lifespan exceeding over 100,000 operations. With high accuracy (±1.0% R), anti-magnetic interference, and compatibility with AMI/AMR systems, these meters are designed for smart water distribution systems