The HC5000T Electronic Sewage Pump Switch with Programmable Cycle Length and Built-in Alarms is designed to replace mechanical float switches and pressure switches that are used in sewage pits. The unique design of the HC5000T allows you to install it without having to take out the failed mechanical switch or having to open the sewage pit. Unlike traditional float switches, the HC5000T is unaffected by waste water due to its dry-sensor technology. No submerged parts in the pit ensures reliability.