Control low limit setting for a special sensor.

        For LS-10/LS-20 base units only.

def control_low_limit(self) -> Optional[Union[int, float]]:
        """
        Control low limit setting for a special sensor.

        For LS-10/LS-20 base units only.
        """
        return self._get_field_value(SpecialDevice.PROP_CONTROL_LOW_LIMIT)