WATER SWITCH 9-12V KEMO M158

If the 2 sensor connections of the module come into contact with water, the built-in relay switches on. Sirens, other cutoff relays, etc. may be triggered with that.

If the electrodes oxidise too quickly due to very aggressive water (e.g. liquid manure), please use electrodes with a nonoxidising precious metal coat: e.g. gold-plated or coated with platinum (in case of very corrosive liquids, electrodes of titanium are suitable, too).