DEVIreg™540 and 550
DEVIreg™540 and 550 were our premium timer thermostats for over a decade but time and technology caught up with them.
DEVIreg™Touch and DEVIreg™Smart are a direct replacement for the 540 or 550 thermostat.
In all cases of upgrade, the new thermostats will integrate with the existing thermostat mounting.
Note: The thermostat in it's entirety needs to be replaced.Information / Data Sheet / Manual
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