All-in-one pump & switch No float switch required,Pump turns on when water level rises shuts off when water is removed Water cooled motors for long life with anti airlock design and moisture tight seals Output Up to 1100 gallonshour Max. recommended discharge head 2.5m. Heavy duty motors with stainless steel shafts and tough thermoplastic bodies. Can be widely used in sewage sampling, high-flow liquid transfer, low noise continuous work occasions; large, extra-large aquariums, small swimming pools, cisterns replenishment, fountains and other purposes., Manufacturer: TRDEWR