Eufy Video Doorbell 2K (Battery-Powered) vs Eufy Video Doorbell Dual 2K

“(UK) I have a Eufy battery powered doorbell cam. My door is on the floor below the main living area of my flat. The building is made of reinforced concrete with rebar and the door has metal eight point locking built into it and the bell never loses a wifi signal. I have the Homebase three and a seperate chime in my kitchen. I always hear the bell and so does the courier, so they know it works. A quick check shows you can turn off the bell sound. Couriers here like to do a teeny tiny knock and then leave. One courier waited four seconds before leaving. It is physically impossible for anyone to get to the door in these flats in four seconds. I have fitted a wire basket of the type used on the backs of electric wheelchairs to my door (this is partially shielded by a downpipe so it doesn't protude where anyone would walk) The Royal Mail deliverer puts parcels into the basket but never rings the bell. The downward facing camera watches the parcel and I have a warning notice that the spot is being recorded in the basket to deter thieves. This set up is working great. I did buy a second battery pack and have snapped off one unlocking key by pulling down on it, but with no lasting damage. I am very happy with Eufy but wish it would work with Smart Things.”