| 摘要 |
A bath overflow plumbing fitting has a housing having a connecting portion for mating with a complementary connecting portion of a plumbing component of the bath overflow so as to attach the plumbing fitting and plumbing component to a bath and to provide an overflow passageway through the housing into the plumbing component. The fitting is arranged to detect the presence of water in the housing and provide an alarm output in response to such detection, so as to provide a bath alarm that is part of the overflow plumbing, rather than an attachment to it. This facilitates the production of a rugged alarm that does not significantly impede the flow of water through the overflow.
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