Light weight, compact, easy to install. Copper impeller shaft, durable wearable liner. No leakage of the sealing ring of the upper and lower power structure Copper impeller shaft, durable 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:Greater than DC 4.7V (input voltage DC5V) Output pulse duty cycle:50%+/-10% Insulation resistance:Greater than 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 Product name:Brass flow sensor Thread Connection:G3/4 / OD 2.58cm / 1 IN Mounting Position:Horizontal & Vertical Application:Water heater, Water meter...etc. Flow Sensor Technical Data: (1) Flow Rate:1-30 L/min (2) Flow Pulse:F=6.6*Q ± 3%,Q=L/min (3) Working Voltage:DC3.5V - 18V (4) Working Current:15mA (5) Suffering Pressure:Max 1.5Mpa (6) Working Temperature:0℃ - +80℃ (7) Min Insulation Resistance:100M Ohm (8) Output Pulse Duty Cycle:50% +/- 10% (9) Max output Pulse Voltage:Greater than DC4.7V (input voltage DC5V) (10) Min Output Pulse Voltage:Less than DC0.5V (input voltage DC5V) (11) Sensor:Hall effect sensor, Digital Output. (12) wire connection: Terminal ( Red):Vdd " + " Terminal (Black):Vout " - " Terminal (Yellow) signal:output NPN signal pulse (13) Connector:Housing SM2.54-3P 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:YF-B6/YF-B5 Colour:Gold Material:copper Size:50x26mm 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