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DEVIreg™540 and 550 D-DocDEVIreg™540 and 550
The 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.
The 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.