[mrs bouquet]

I have to buy a new door bell.  I can no longer hear the existing.  There are many to choose from, but should I be better to have the two receivers as plug  into a socket or batteries.   I don't need it to show be pics of who is there etc.   Thank,  Mrs Bouquet

[Lardman]

You can probably just wire another chime (the bit that does ding dong) into your existing system and have it placed somewhere better for your to hear.

[mumofstig]

I got one of these
https://www.wickes.co.uk/Byron-150m-Twin-Portable-Plug-in-Wireless-Doorbell-set/p/230376

The plug in 'ding-dong is quite loud (for me anyway) plus you can clip the portable one onto yourself, or just keep it nearby, if you prefer ( I clip mine on when I'm out in the garden).

[mrs bouquet]

Thanks for the door bell help, I have got one now (all singing and dancing).  All I need now is a visitor  Mrs B