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: 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): " + " 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:-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 different from the real thing. The measurement allowed error is +/- 1-3cm. Light weight, compact, easy to install. Copper impeller shaft, wearable liner. Copper impeller shaft, wearable liner. No leakage of the sealing ring of the upper and lower power structure