The Baxi Interpart Flowswitch (Altecnic AL300011, Manufacturer Code: 242459) is a reliable safety device designed for use in various Baxi boiler models, including 100 He, 50 He, Platinum, Promax SL, and more. With a built-in sensor, this flow switch detects water flow in domestic hot water and central heating systems, ensuring safe operation by preventing ignition in low-water or dry conditions. Enhance your boiler's efficiency and safety with this essential component.