public SensorlessThresholdProperty(SensorlessThresholdProperty prop)
 {
     if (prop == null)
     {
         return;
     }
     this.Property       = prop.Property;
     this.ThresholdValue = prop.ThresholdValue;
 }
 public SensoredThresholdProperty(ISensor sensor, SensorlessThresholdProperty prop) : base(prop)
 {
     Sensor = sensor;
 }