二次变频管网叠压，自动检测水泵，水压，变频器是否正常，稳压节能，确保用户用水压力正常，自动与手动确保水泵在正常与维修状态不影响供水。-The two frequency network pressure superposition, automatic detection of water pump, hydraulic pressure, the inverter is normal, stable energy, ensure that the users of water pressure