I Must admit this is not a great experience searching hours for a suitable transformer in the UK for this Smart doorbell. Well I hope this works, It should arrive in a week. Great Test Case -





Yes send it back to Screwfix if you want to keep your smart doorbell. Your Chime what is the max Voltage on that ???, as mine runs 8v - 16V. ( If you get a transformer any higher it will damage the chime logically thinking of it ) - Chime part done.kevin1911 wrote: ↑Fri Oct 01, 2021 12:49 pm Hollypranks - I've just registered to say thanks for posting this up. I'm also in the UK, and have just bought the AD410 from Amazon in the US. It arrived today and I was half way through installing when I realised my chime and transformer are only running at 10.2V, so off to Screwfix I went. I bought the exact same transformer as you, and am getting exactly the same issue with the app crashing as soon as it tries to join WiFI.
I'm thinking I'll be sending it back rather than trying to source a different transformer, as even if I could get the transformer working I'd still be struggling to find a 24V chime.