Has anyone tried these water level sensors? http://www.ebay.es/itm/Gravity-Non-contact-Digital-Water-Liquid-Level-Sensor-For-Arduino/282694284985?hash=item41d1e476b9:g:EMEAAOSwFbJZ4jTU They may be useful for a client who wants to detect when his water tank is getting low but I was wondering, befor…

"Gravity" Contactless water level sensor, anyone?

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