The Valvin V100B is an intelligent fill valve that will detect and prevent toilet bowl overflows. The V100B’s “bowl sensor” detects a high water level caused by a blockage, and then automatically shuts off the water supply before overflow happens. With the Valvin V100B, no worry about toilet bowl overflows, no cleanup efforts are needed, simply plunge away the obstruction and resume normal operations, save money, save water, save time!!