I. Introduction This type of flow device is a disposable rain gauges, PLC controller, stainless steel shunt device component, can be precisely controlled pre-rain pollution is more severe automatic discharge rainwater can be filtered to collect rainwater, sewage, realized late cleaner rainwater collection. Device can be completed on rainfall, abandoned traffic monitoring, monitoring of rainfall frequency, truly ideal to collect rainwater. II. Product Specifications Model YBSQL-E200 YBSQL-E300 Power 220V / 50HZ 220V / 50HZ Connection size inlet and outlet water inlet and outlet DN300 DN200 DN100 DN100 control outfall control rainfall rainfall control Material Stainless steel 304 304 pre-split-flow rainfall 2mm (can be set ), rain gauge controller 2mm (can be set), three rain gauge controller Application Application: villas, residential quarters roofing, commercial buildings and other abandoned roof rainwater flow filtration product features four fully functional, saving manpower. Maintenance is simple, safe