The moving parts in a sump pump level switch can get gummed or seized up, resulting in a flood. The Ion digital level control switch from Metropolitan Industries addresses that problem with solid state sensing technology with no moving parts to wear or fail. It is also available as the Ion+ with a high water alarm. It is rated for use in both sump and sewage pump applications and can be used with Ion pumps or those of most other manufacturers.
Metropolitan Industries www.ionproducts.net.