Light weight, compact, easy to install. Copper impeller shaft, wearable liner. No leakage from the sealing ring of the upper and lower power structure. Interface size: 6 points (G3/4). Working voltage range: DC 5-18V. Inner diameter/outer diameter: 18.1/25.5mm. Thread length: 13.75mm. Water pressure resistance: 1.75MPa. Output pulse high level: DC 4.7V (input voltage DC 5V). Output pulse duty cycle: 50 10%. Insulation resistance: 100M. Flow range: 1-30L/min 3%. Sealing: Each hole is sealed and tested with 1.7MPa water pressure for 1 minute; no leakage or deformation. Flow pulse characteristics: (6.6Q), Q=L/min 3%, producing 396 pulses per liter of water. Note: Product design may vary slightly between batches; minor differences in appearance or color may occur but do not affect functionality. Type: B6 Color: Gold Material: Copper Package Contents: 1 Flow Sensor (Other items not included) Note: Lighting and display settings may cause slight color variations between the image and actual item. Measurement error allowed: 1-3cm.