The thermostat is a device that allows the user to increase or decrease the temperature of your boiler. There lots of variations available in the market and they don't all need to be attached to the boiler, as wireless and wifi stats are also available.
Supplied with fittings
Technical specification
Waist Sizead35cd11gwToilet Cistern CapacityFTW--Supplier Part Number173364Brand NameIdeal