Such as connecting two controllers in series, where one is put in the pool, add one to the well to control the water pump. It can prevent the pump equipment from being damaged due to the shortage of water source Widely used in households, factories, mines, etc. pools, oil, weak acid and weak pools, barrels, troughs, irrigation containers, etc. float controller is to adjust a , grooves or level switch. It can be automatically adjusted, easy to operate, easy to install, safe and reliable, maintenance-free, environmentally friendly.It is to sewage. It is also possible to connect three controllers in series, and put one in the water tower, one to the filter tank and one to the river (well) can control two pumps at the same time., Manufacturer: Mcnhbdgg