Flowmeter Counter, Control Effect Water Flow, Sensor Switch. Features: Mainly Used for Water Testing, Water Cooling System. Application: Water Heaters, Credit Card Machines, Water Vending Machine, Flow Measurement Device. Specifications: Unit Type: Piece High Amplitude: 4.6V Low Amplitude: 0.5V Electric Strength: 1250V/min Insulation Resistance: 100M Hydrostatic Pressure Testing: 2.0Mpa The Lowest Rated Working Voltage: DC4.5 5V-24V Maximum Operating Current: 15mA (DC 5V) Working Voltage Range: DC 5~18V Load Capacity: 10mA (DC 5V) Use Temperature: 80C Operating Humidity Range: 35%~90%RH (no Frost) Allowing Pressure: Pressure 2.0Mpa Temperature: -25 ~ +80 C Package Weight: 0.05kg (0.11lb.) Package Size: 1cm X 1cm X 1cm (0.39in X 0.39in X 0.39in) External Threads: 1/2" Outer Diameter: 20mm Intake Diameter: 9mm Outlet Diameter: 12mm Package Included: 1PC* Water Flow Sensor . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.