Features: Quality material, corrosion resistance, high temperature resistance. Good sealing effect, easy installation. High sensitive, easy to operate. Fast response, stable performances. Working principle: When there is water flow in the water flow, and the water flow rate is large equal to 1.0L/min, the magnetic in the water flow is drive by the water flow to produce displacement, and the magnetic displacement drive the magnetic source to produce magnetic control effect to make the water flow output signal. The signal input equipment control system, through the control system to achieve the control function, when the water flow is less than the starting flow, the water flow output "off signal." The control system produces the control function opposite to the cabinet. Specifications: Material: Brass Interface: (DN15) Inner/Outer Diameter: 15mm/20.5mm Thread Length: 18mm(Long), 10.4mm(Short) Current: 0.5A Load Current: 0.5A Contact Resistance: 100M Load Power: 50W Load Voltage: 220VDC Minimum Decay Voltage: 220VDC Start Water Flow: Less Equal to 1.5L/Min Flow Range: 1.5-30L/Min Start Water Pressure: Less Equal to 0.1Mpa Minimum Water Pressure: Less Equal to 1.75Mpa Working Temperature: 1-120 Response Time: 0.2S Release Time: 0.2S NOTE! Intermediate contactor must be added to the load large than 50W. Size: Approx. 62x23.79mm/2.44x0.94in Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Flow Sensor