Product Description G1/2 DN15mm Water Flow Sensor Switch Flow Meter Copper 1-30L/min High-quality material Made of premium copper, environmentally friendly, sturdy and durable. Lightweight and portable, reasonably sized, stable performance, low water pressure start-up, easy installation, and safe to use. The G1/2 water flow sensor has a maximum water pressure of 175MPa and a flow range of 1L/min to 30L/min. Three-wire connection: Red to positive, black to negative, yellow to pulse signal. Hall effect sensor: Built-in Hall effect sensor emits an electrical pulse with each rotation. The Hall effect sensor is waterproof, ensuring the sensor remains dry. Widely applicable, perfectly suited for water heaters, water dispensers, water purifiers, automatic water dispensers, coffee machines, flow meters, water control equipment, etc. Our water flow sensor is the G1/2 type, with a maximum water pressure of 1.75 MPa and a flow range of 1L/min to 30L/min. It can be perfectly used in water heaters, water dispensers, water purifiers, automatic water dispensers, coffee machines, flow meters, water control equipment, etc. Product Features: Material: Copper Color: As shown in the picture Type: G1/2 (external thread diameter), DN20mm Water Quality Requirements: 60 Starting Flow Rate: 1.5 liters/minute Flow Range: 1-30 liters/minute Maximum Water Pressure: 1.75 MPa Working Voltage Range: DC 4.5-18 V Maximum Current: 10 mA Insulation Resistance: 100 ohms Electrical Strength: AC 500 V, 50 Hz Copper Switch Length: Approx. 60 mm/2.4 inches Wire Length: Approx. 35 cm/13.8 inches Weight: Approx. 95 grams Package List: 1 x Water Flow Switch