Ecolink WST-620 433 MHz Flood and Freeze Sensor

The Ecolink WST-620 is a low-profile environmental sensor for areas where a small leak or falling temperature can become an expensive repair. Gold probes on the base detect as little as 1/64 inch of water, and the temperature channel reports a freeze-risk condition below 41 F with restoration at 45 F.

Flood and freeze functions use separate electronic serial numbers, allowing the compatible DSC panel to identify which condition occurred and apply the appropriate response. A CR2450 battery supports up to seven years of service under the current manual, with low-battery reporting and supervised check-ins about every 64 minutes. The optional mounting adapter and water-detection rope can extend sensing into harder-to-reach areas.

Allied places the WST-620 where water is likely to appear first, such as near a water heater, washing machine, sink, toilet, or mechanical equipment, then tests both enrollment and radio reception.