The Monarch Plumbsoft SE Water Softener, model SE-23, is a smart efficiency unit with meter control, suitable for households of 1-12 people. Its slimline design ensures easy siting and installation. The softener features meter control for optimal performance and includes a Rapid-Fit bypass, reducing installation components by up to 80%. The built-in Customer Protect Programme (CPP) detects leaks, delays regeneration until 2 am, learns water usage patterns for salt and water savings, and automatically adjusts for BST/GMT time changes. It offers simple 2-level programming with a digital display for quick setup. The package includes a full standard installation kit, a water hardness test kit, and a 220v 3-pin plug transformer. The unit only regenerates used resin.