Features 1、Output the state of the liquid flowing or stationary in the pipeline as an electric switch signal 2、Depending on the switch control method, it can be used for two ways: water outlet power on or water outlet power off 3、Can be used for water flow control of fast electric water heaters 4、Suitable for prompting replace the filter core of self-priming water purifiers and water purifiers in areas without tap water 5、The connecting port is G14in male thread, easy to install and connect Specification Item Type: Water Flow Sensor Switch Model: fs-1/4-1 Connecting Thread Size: Male thread G1/4in Material: PP Working Current: 0.5-1A Maximum Temperature Resistance: 85℃ Medium Specific Gravity: 0.7 Working Principle: When there is water flowing in the water flow switch, the magnetic core in the water flow switch is pushed by the water flow to cause displacement, and the magnetic core displacement drives the magnetic source to generate a magnetic control action so that the water flow switch outputs a "on" signal. This signal is input to the device control system, and the control system is used to realize the control function. When the water flow is less than the starting flow, the water flow switch outputs an "off" signal. The control system produces the opposite control effect Package List 1 x Water Flow Sensor Switch