Features: Control water flow with ease using our DN15 flow switchvalve - the perfect solution for quick or delayedelectric water heating system. Durable plastic, our flow switchvalve is designed to withstandwear and tear while providing accurate and reliable control over water flow. For homeowners, contractors, and DIY enthusiasts looking to optimizetheir electric water heating system. Whether you're using a fast-heating or storage type electric waterheater, our flow switchvalve ensures precise and efficient control over water flow, allowing for temperature settings and improved energyefficiency. Upgrades your electric water heating system today with our high-quality DN15 flow switchvalve - the smartchoices for reliable and hassle-free water flow control. Specifications: Material: Plastic Accuracy: ±1-10cm/s Medium Temperature: -20 to 80℃ Thread: G1/2 Working Flowmeter Range: 1-25L/min RatedVoltage: 110VDC Length: Approx. 5.2cm/2.05in Package Includes: 1x Fluidmeter Counter Flow Sensor note: Purpose: According to the different control modes of theswitch, it can be used in two ways: power supply or power supply. It can be used for quick electric waterheater power control and water storage electric waterheater outlet power control. How it works: When there is water flow in the water flowswitch and the water flow rate is ≥1.0L/min, the magnetic core in the water flowswitch isdriven by the water flow to produce displacement, and the magnetic core displacementdrives the magneticsource to produce a magnetic control effect to make the water flowswitch output "on" signal. The signal is input to the control system of the equipment, and the control function is realized by the control system. When the water flow is less than the starting flow, the water flowswitch outputs the "off" signal. The control system produces the opposite control effect.