http://www.screwfix.com/prods/90334/Plumbing/Central-Heating-Controls/Siemens-REV23rf-Set-7-Day-RF-Programmable-Stat Anyone used these yet? I usually fit the Honeywell version but I like the look of the Siemens stat, touch screen and everything. http://www.screwfix.com/prods/90334/Plumbing/Central-Heating-Controls/Siemens-REV23rf-Set-7-Day-RF-Programmable-Stat