?It is mainly used in the household tap water pressurization in low water pressure area, especially the low water pressure ignition starting of the shower, and the automatic circulation of solar water heater ?Stable performance: to separate the sensing room, magnetic control room and electronic components. Avoid the iron material in the pipe to be adsorbed by magnetic materials so as to avoid the failure of the switch ?High temperature resistance, maximum medium temperature can reach 70? ?Low water pressure start: when the water pressure reaches 0.03KG, it can be started ?Electronic components are used as the control devices, so that the products in the work without spark, completely closed, safe to use.