I have six leakfrogs in our flat to protect against water damage. Sometimes more than one goes- off at a time, and I have to run around checking each leakfrog. To make things simpler (and to make the frogs more entertaining), I added LED eyes to each frog that flash when the leak alarm goes off.
Easy hack - two LEDs and a 220 ohm resister and some wire. The hardest part is disassembling/reassembling the little buggers.
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