Group Bulb Dimmer vs Group Bulb Dimmer-2.1

Any have an idea what the difference is between a device type "Group Bulb Dimmer" vs "Group Bulb Dimmer-2.1"

A quick search on "Group Bulb Dimmer-2.1" didn't come up with hits...


The Group Bulb Dimmer-2.1 is used by Group-2.1. There were changes made in the way the virtual device interacts with the app, that necessitated a different driver. These changes were needed to support the enhanced indicator functionality of Group 2.1 vs Group 2.0.

I updated to the latest Hubitat version today, and got the errors below which made me investigate...

Is there a need, or any point, to upgrade from Group (2.0) to Group 2.1?
If so, what would the benefits be?


PS I am using Group Bulb Dimmer (Group 2.0)

Group 2.1 has less overhead and responds more quickly for me, especially with larger groups of lights (zigbee in my case). I upgraded all of my groups and am very happy with the improvement. Just sharing my experience in case it helps.

Hey all,
I updated one of my groups to 2.1 which is nested in an existing scene and tonight when that scene fired the group didnt activate. I'll check the logs later but is there anything I should be looking out for ?
Also - should I be updating the scenes as well as the groups, cause thats going to be a PIA.

*Solved - for some reason the capture had them down as RGB bulbs but when I changed the captured state back to CT they are working again. I saw in the logs it was trying to set them to Blue with a Hue of X.. which didnt make sense.
All sorted now.