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Harwil manufactures flow switches, level switches, pump controllers and wireless switch controllers. Our CF models of chemical-feed pump controllers are the industry standard and can control any brand of pump. These unique controllers are low cost, simple to install and ultra-reliable. Our new wireless switch systems eliminate the need for expensive wire between the switch and the pump. They can get up to a 1000 foot range and work with any kind of switch. Harwil’s manufacturing is located in Oxnard California.