The RB-24SE-S Residential Low Water Cut-Off by McDonnell Miller is designed to prevent boiler damage by detecting low water levels. This unit features a reliable float switch mechanism and is suitable for residential applications. It operates at a voltage of 120V and is compliant with UL standards, ensuring safety and reliability. The compact design allows for easy installation in tight spaces, making it ideal for various heating systems. With durable materials and a robust construction, the RB-24SE-S is built to last, providing peace of mind for homeowners.