A few months ago, I wrote about a very popular cable float switch for another site (https://www.codrey.com/electronics/cable-float-level-sensor-switch-first-look ...

Liquid-level switches used in aircraft, nuclear-power plants, medical equipment, and other critical applications must be precise and reliable. For that to happen, design engineers must know the ...

Inside the DIY shower drain box: a bilge pump, float switch and outlet fittings for less than $25. Courtesy Roger Hughes When I bought my Down East 45, the shower in the aft stateroom's head drained ...