Features:Made from quality stainless steel material, stable performances, has long service life. Heat resistance, wear resistant, reliable quality. Lengthen external thread, easy and convenient installation. Simple and durable structure, can withstanding frequency usage. Widely application, can be used for water heater, irrigation, etc. Specifications:Material: Stainless SteelInterface: DN15Working Voltage: 3.5-24VDCFlow Range: 1-25L/MinPulse Characteristics: Hz=[18xQ-3]5%(Horizontal Test)Withstanding Water Pressure: Lower Equal to 1.75MpaInner Diameter: 15mm/13.5mmThread Length: 20mmWorking Current: 15mA(DC5V)Load Capacity: Less Equal to 10mA(DC5V)High Level Output Pulse: Large Than DC4.5V(Input DC5V)Low Level Output Pulse: Lower Than DC0.5V(Input DC5V)Storage Temperature/Humidity: 25-80/25%-95%RHSize: Approx. 66x20.5x20.5mm/2.60x0.81x0.81in Note:Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Fluidmeter Counter