Lightweight, compact, and easy to install. Features a copper impeller shaft and wear-resistant liner. Sealing ring prevents leakage in both upper and lower power structures. Product Name: Brass Flow Sensor Thread Connection: G3/4 (OD 2.58 cm / 1 inch) Mounting Position: Horizontal & Vertical Application: Water heaters, water meters, etc. Flow Sensor Technical Data: (1) Flow Rate: 1–30 L/min (2) Flow Pulse: F = 6.6 × Q ± 3%, where Q is in L/min (3) Operating Voltage: DC 3.5 V – 18 V (4) Operating Current: 15 mA (5) Maximum Pressure Rating: 1.5 MPa (6) Operating Temperature: 0°C – +80°C (7) Minimum Insulation Resistance: 100 MΩ (8) Output Pulse Duty Cycle: 50% ± 10% (9) Maximum Output Pulse Voltage: DC 4.7 V (with DC 5 V input) (10) Minimum Output Pulse Voltage: < DC 0.5 V (with DC 5 V input) (11) Sensor Type: Hall effect sensor; digital output (12) Wire Connections:   Red wire: Positive (+)   Black wire: Ground (–)   Yellow wire: NPN signal pulse output (13) Connector: SM2.54-3P housing Model: B5 Color: Gold Material: Copper Dimensions: 50 × 26 mm Package Contents: 2 × Flow Sensor Note: Other accessories or items shown are not included. Please note: Slight variations in appearance or color may occur between batches due to manufacturing updates. These differences do not affect performance or functionality. Color representation may vary slightly depending on screen settings and lighting conditions. Dimensional tolerance: ±1–3 cm.