Smart pH CO2 is the micro-processor based, automatic way to achieve and maintain perfect pH balance. Designed to control pH in any type of pool: aboveground, portable spa, or in ground pool and spa. Comes hard wired for new installations or can be added to an existing pool by plugging into an 110V outlet. Maintain consistent pH balance with this easy-to-use controller that does the monitoring and chemical management for you. The Smart pH CO2 enhances the performance of salt chlorine generator systems by making the produced chlorine more effective and efficient.