Level (LVL)
This feature shall indicate that the valve is capable of being adjusted to a specific position, as a percentage, of its full range of motion.
TimeSync (TS)
This feature shall indicate that the valve uses Time Synchronization and UTC time to indicate duration and auto close time.
This feature shall NOT be supported unless the device supports the Time Synchronization cluster.
These are optional features supported by ValveConfigurationAndControlCluster.
See
MatterSpecification.v13.Cluster § 4.6.4