Home DIY

Was it easy to fit? - 4 holes in the wall, rawl plugs, screws. They provide everything you need including a drill bit for brick and spirit level. I found it easy
What's to stop someone pulling it off? There's a security screw at the bottom that you need the special provided screwdriver to remove. Ring replace for free if it's stolen
How long does the battery last? - I guess it's in the housing? Yes rechargeable battery in the housing, can't comment on battery life yet but it tells you % in the app and you can buy as many battery packs as you like to always have one charged. I guess life depends on how you use it. You can wire it to the mains if there's an existing bell
Which one do you have? I have the ring doorbell 2
Is there a mic/2-way talking? Yes it's awesome
Do you live on a busy street? If so is it always being turned on? (my folks are in a terraced house on a busy road with a fair amount of foot traffic as well). Yes I have switched off the motion sensor as cars driving past were triggering it.
Any other thoughts? It looks good

Use a decent drill with hammer action if drilling brick and it's easy

Jumping in as I have had a ring doorbell for about a year now, so thought I could give some thoughts.

1. You can set sensitivity zones, so can specify how large an area and what angles set it off.
   
2. If they have an existing door bell you can power it off that
   
3. The Wi-fi isn’t brilliant on it, so make sure you get a decent Wi-fi read outside the door, if not you can buy the chime pro which works as an extender
   
   

Nest have just launched theirs in the UK too, a bit more money but has some added features, like facial recognition and pre-recorded messages, which could be handy if your folks take a while to get to the door...