Well this is cool. Works very nicely. I've set up a little flow which flashes some of my lights blue if a leak is detected (they are flashed red on intruder signal at night) and sounds the NETGEAR Arlo siren if the sensor isn't returned to a dry condition after 10 minutes. A test with a wet finger shows everything is working nicely. Under the sink it goes now, near my new reverse osmosis water purifier
Now if only these wretched Samsung sensors could hold on to their signal and stop disconnecting on a regular basis then I'd be even happier! I find the ones at the end of the house struggle to keep the signal. I put a Samsung socket in the wall nearby to bridge the signal but this also surprisingly goes down on a regular basis and as soon as it does the sensors local to it all tend to disconnect. Sigh.