Floodcheck Leak detector
This litte device is a self  contained  batteryu operated leak detector.It has a removable base  which can be fitted anywhere a water leak might occur.When the SENSORS get wet a loud alarm goes off. There is also a version which hjas a valkve to turn your water at the saem time.Cost of the basic unit is about £15.00.Please visit our wesbite for more details   or try the link below to see the product details