This holds a comma-separated string listing the human-readable enumeration values that valueRfInput's sibling object valueFactoryDefault can take, matching numeric codes starting at 1 (for Factory Default Reset that's off(1) or on(2)). Management software reads this string dynamically to build a drop-down or label for the control that triggers the module to reset its configuration back to factory defaults when set to on, instead of hardcoding the enumeration text for every possible parameter in the client itself.