Strange - the handler I used is from the post here: [RELEASE] Fibaro Single Switch 2 FGS-213 & Double Switch 2 FGS-223
I see three ‘devices’ showing in my IDE for the double switch 2, one for the parent module itself and then one each for S1 and S2. The parent device handler is using the custom DTH I’ve linked to above. The S1 and S2 devices have a handler of type ‘Child Metering Device’ which was assigned automatically and I didn’t change.