I recently found out about a pump shutoff switch that cuts power to the pump if you overflow siphon breaks. Does anyone use something like this? Is it totally unnecessary?
With a properly designed system it's just another safety feature that is hopefully never used. If your system is in a peculiar place (antique hardwood floors or Persian rugs), it would be a dire necessity.
They need to be checked regularly to remove any algae build-up take would cause them to stick.