Home Assistant Leak Notification Automation

The Sonoff SNZB-05P seems like the best Zigbee leak sensor right now. It’s around $20, and its snap-on WLDC200 sensing cable detects water anywhere along the cord, so it isn’t just watching a single spot the water can spread around. I have them in appliance drip pans and under sinks, all feeding one Home Assistant automation that alerts my phone when a sensor trips and sends an all-clear when it…