Adjustable: The range can be adjusted, allowing the user to select the setting value according to the needs of the Withstand strong pressure: It can be used in a large liquid pressure range, and can withstand more than 1MPA at most Stable performance: simple working principle, stable and performance, long working life High degree of protection: it can be used in indoor or outdoor environments Wide range of applications: it can be used in swimming pool equipment, meters, water meters, coffee machines, water heaters, and central air conditioners