HVAC actuators extension properties

These devices support following subsystem-specific extensions:

• Flow pressure measuring properties (AI - subsystem-specific extension)
• VAV setpoint (AO - subsystem-specific extension)
• Network-ADA (AO - subsystem-specific extension)
• Networked valve actuator (AO - subsystem-specific extension)
• Progress value (AO - subsystem-specific extension)
• Configure: GxB111.9E/KN (PrphDev - subsystem-specific extension)
• Pulse width modulation: thermal (AO - subsystem-specific extension)