Works As Advertised
Ordered four. Installing 9-volt batteries took some finesse, as wires can make pushing battery into compartment tricky--once in the cover closes just fine. Tested all on wet paper towel, and they worked as advertised. Loud. Have yet to hear "low battery" chirping. Supply hoses to clothes washers, toilets, and sinks can blow at any time. Being alerted as soon as they do might save you hundreds or thousands of dollars. These alarms are well worth the price.
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