Don't know if this helps but I ran the "Get Attributes App" for the Ring Flood/Freeze sensor and here is what was returned:
Device Report
| Device | -= Capabilities =- |
|---|---|
| Leak Sensor - Master Sink Ron | [RelativeHumidityMeasurement, Configuration, Battery, TamperAlert, WaterSensor, TemperatureMeasurement, Sensor] |
| -= Attributes =- | |
| [battery, tamper, humidity, temperature, water] | |
| -= Commands =- | |
| [configure] |
