ultrasonic water meter(water meter, ultrasonic flowmeter)Low power, High accuracy, better reliable, no moving part, low power ultrasonic water meter(water meter,flowmeter)Low power ultrasonic water meter is designed according to Europe alliance ... according to the normal water meterIP68, can working under water lower than 2 metersFoundry in mould, no revealDN15-1000mmCeramic sensor apply to -40 ...