Fluid-sensing switch system with redundant safety alarm capability

Abstract

A fluid-sensing switch system that can monitor pre-established threshold fluid levels in the primary drain pan inside an air conditioning unit or other condensate-producing unit, and also in a secondary drain pan positioned under the unit. Once the threaded plug of a sensing probe is connected to the unit's weep hole, it positions a center sensor providing a first power potential through a false-trigger-reducing resilient piece in a position to wait for rising fluid capable of breaching a weep hole dam. A substantially circular sensor is also present provides the second power potential needed for signal generation. A signal-generating member connected to both sensors is electrically connected to the unit to shut it off, and/or activate a pump that removes fluid from the secondary drain pan. The signal-generating member provides the redundant safety alarm capability, when mounted on a secondary drain pan. Anti-microbial elements are optional, but preferred.