Features: 1. Stable, high temperature, low water pressure start, safe 2. Detects whether the liquid flow and flow rate meet the requirements, and at the same time provides a signal output in ON or OFF state by switching electrical contacts 3. Equipment system detects the presence of a signal or control current to pass through (flow switch electrical contacts pass, off state) to determine the working status of the piping system Principle: When the water flow in the pipe exceeds 0.75L/min, the core displaces under the action of water and drives the magnetic source to generate a magnetic sensor outputting a "1" switching signal. The signal is input to the device control system and amplified to achieve water flow control. When the water flow in the pipe is less than 0.75L/min, the core returns under the force of the reset spring, causing the sensor to output a "0" switch signal to stop system operation. Specifications: Power: 60-90W Voltage: AC 220V Current: 0.5A Water Temperature Range: up to 100C Pressure: 0.6MPa Female Port Thread Diameter: G3/4 Male Thread (Fit Pipe Diameter): G1/2 Cable Length: 26cm Quantity: 1 Piece Note: Please allow 1-3mm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to differences between monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Water Flow Sensor Switch