Lightweight, compact, and easy to install. Features a copper impeller shaft and wear-resistant liner. Leak-proof sealing ring on upper and lower power structure. Product Name: Brass Flow Sensor Thread Connection: G3/4 (OD 2.58 cm / 1 inch) Mounting Position: Horizontal & Vertical Applications: 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 Material: Copper Color: Gold Dimensions: 50 × 26 mm Package Includes: 2 × Flow Sensors Note: Other accessories 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 functionality. Color representation may vary slightly depending on screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.