This is a simple mount for the Zennio inBOX 24 v3 multifunction actuator.
The website describes it as “flush mounting”, but there's no way built in to do that. The actuator simply presses into this mount and is friction held. If you are keen, you can add a spot of glue to make sure it doesn't come loose.
There are 4 x 4mm holes for screwing to a surface. Now it's mountable.
The author marked this model as their own original creation.