Question - how do the thermostats that are on the radiator valve measure the room temperature? They are right next to the heat source so I'd like to understand how they calculate a room temperature.
@earvhs According to many on here, they stick up a wet finger to see if there is any wind. If none then it's a random pick between 15c and 21c. If it's windy they feign ignorance.
Sorry I know not - someone may well be along to help you but I can say they are not very accurate.
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