You never mentioned you can pull the pin out from underneath and set your temperature you can set it from 10 to 29 choose your desired temp then put the pin back in so your kids or wife can turn the tvr up past the temperature you have set it at.
The body is trv4 🤓 I would have put atrv4 head on it 🤷
Same body as the rt212 , the east of the valves in the house are rt212 and the trv4 are more expensive 🤷
Interesting & helpful - now I know what I’m dealing with, I’m off to Screwfix! Thank you!