... good quality 2.LCD/LED big display screen Ultrasonic Water Meter Small Range: 4m, 6m, 8mMedium Range: 8m, 10m, 12mLarge Range ... MTU series is a multifunction type four-wire ultrasonic Level Meter, which is of DC or AC power supply, DC4-20mA ... DC power supply Smart LCD/LED display screen Ultrasonic Water Meter