SITRANS FS220 - Clamp On SITRANS FS220 1-path ultrasonic flow meter for volume measurement of liquids. For simple use in the areas of water and sewage, heating, ventilation and air conditioning technology. Ideal for retrofitting in water supply networks for leakage monitoring. Transmitter FST020 Graphical display highlighted with push button, Modbus (RTU), Outputs (passive): Current, Relay, Pulse, complete with cable glands Power supply: 11,5 - 28,5 V DC . . . No Sensors No cables UL, ULc, CE, KC