Features: 1. Stable performance, high temperature resistance, low water pressure start, safe operation 2. Detects liquid flow and verifies if flow rate meets requirements, while providing a signal output in ON or OFF state through electrical contact switching 3. Equipment system detects the presence of a signal or control current to determine the operational status of the piping system based on switch state (flow switch contacts closed for flow, open when no flow) Principle: When water flow in the pipe exceeds 0.75L/min, the core displaces under water pressure, activating the magnetic source to trigger the magnetic sensor, which outputs a "1" switching signal. This signal is sent to the device control system and amplified to enable water flow control. When water flow drops below 0.75L/min, the reset spring returns the magnetic core to its original position, causing the sensor to output a "0" switch signal, stopping system operation. Specification: Power: 60-90W Voltage: AC 220V Current: 0.5A Water Temperature Range: up to 100°C 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. Ensure you are comfortable with this before purchasing. Due to differences between monitor displays, the image may not reflect the actual color of the item. Thank you! Package Contents: 1 x Water Flow Sensor Switch