The AquaSense has been designed to three criteria: Improved Safety – better sensors lead to better process control which leads to less variation in chlorine residuals even with highly variable bathing load. Improved Control – better process control leads to reduced chemical usage, lower costs and an improved bathing experience. Reduced Costs – lower chemical costs, less expensive controllers, inverter control leading to hugely reduced electrical usage costs are just a few of the ways that the AquaSense can save you money which can pay for a new controller in just a few months.