Johnson Controls WD-2 Detector 321702-401 This switch stays open until

This switch stays open until the red button on the back is physically depressed

For customized installations

including the integrated control module calibrated for specific Heil

Normally Closed Safety: Fail-safe design remains closed during power loss or ignition failure

Johnson Controls WD-2 Detector 321702-401 This switch stays open untilThe Johnson Controls WD 2 Detector is an industrial grade, 24V conductive liquid sensing solution specifically engineered for HVAC condensate monitoring and Building Automation Systems (BAS). This line powered unit functions as a high reliability drain pan level switch and leak detection interface, utilizing the electrical conductivity of water to bridge its base contacts. Designed for versatile field application, it features a weather resistant NEMA