Used system, worked fine when taken off pool. Upgraded to becsys 5. Will need new probes. But does come with flow cell also. As you see plugs should be replaced. Stemmed pump burnt out burning both ends of wire. Tested and all works as should! The Becs Precision Control MR1 BECSys2 is a modern pool part designed for in-ground pools. This controller is manufactured by Becs and operates on 115VAC with 9.25AMP of power, making it suitable for various pool equipment and systems. With its precision control features, this product ensures efficient and reliable performance for maintaining optimal pool conditions. Perfect for outdoor living and enhancing your backyard experience.