Aeon Siren (Gen5) default driver volume control doesn’t work?

I just added one of my Aeon Sirens (Gen5) to my HE; most of the functionality works fine with the default HE driver, but none of the volume controls do anything. The device should have five volume levels, which I have successfully adjusted before with the default ST device handler; the default HE driver doesn’t seem to be set up correctly for this device. Or am I missing something here? Thanks for your time and input.

UPDATE: Never mind… double-checked Aeotec documentation, and I was wrong about the number of volume settings available! Default HE driver seems to work fine.