Light weight, compact, easy to install. Copper impeller shaft, wearable liner. No leakage of the sealing ring of the upper and lower power structure Copper impeller shaft, wearable liner. Interface size:6 points (G3/4) Working voltage range:DC5-18V Inner diameter/outer diameter:18.1/25.5mm Thread length:13.75mm Water pressure resistance:less than equal 1.75MPa Output pulse high level: DC 4.7V (input voltage DC5V) Output pulse duty cycle:50%+/-10% Insulation resistance: 100MQ Flow range:(in 1-30L/MIN)+/-3% Sealing:Close each hole and test with 1.7Mpa water pressure for 1 minute, No leakage or deformation Flow pulse characteristics:(6.6*Q)Q=L/Min plus or minus 3%, that is, 396 pulses per liter of water Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Type:-B6 Colour:Gold Material:copper Package Contents: 1 * Flow Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.