QMX3.P02, P34, P37, P44, P74 extension propertiesThese room operator units support following subsystem-specific extensions:Configure: QMX3.P34/37/44/74 (PrphDev - subsystem-specific extension)KNX PL-Link: FSA (APrcVal - subsystem-specific extension)Room unit LED (KNX) (LgtIn - subsystem-specific extension)Room unit LED (KNX) (BlsIn - subsystem-specific extension)