Thank you all for your replies. I have attached a photo of the inside of the case. The only reason I am thinking digital is to have an accurate temperature reading. Not looking to spend a fortune on a hive system at the moment...simply something that's works for now!
Hi Folks, looking for some advice.
I have an older style Sabre boiler and an old 'Acl' thermostat in the hall.
(see pics) The thermostat has never worked since I moved in a year ago and does not power up.
I removed it and have attached photos of the wiring. Looking to see what thermostat is...