Looking for a way to monitor/notify me when a water/wet sensor is dry

Some water sensors use the water itself to complete the circuit between two contact points. They will not be able to report dry. Others can.

Several community members have done various projects which use dry alerts, typically for pet water systems or Christmas tree pots. Here are some to look at.


The Aeon labs model seems to be the most popular for this purpose, for the reasons discussed in the following thread:

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