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Introducing Thermostat EFIT 540/550
Thermostat EFIT 540 is an advanced temperature 
controller, with a built-in Timer.
Thermostat EFIT 550 ONLY:
Thermostat EFIT 550 is an adaptive temperature controller, 
specially designed for fl oor heating systems.
The Thermostat EFIT 550 will measure the radiant comfort 
from the fl oor combined with the comfort from the air 
temperature in the room to offset the outside weather 
condition.
We as human beings perceive comfort as the combined 
effect of the radiant heat from the fl oor and air temperature 
in the room. By continually measuring this combined effect, 
it is therefore possible to maintain the highest possible 
comfort level.
A higher fl oor radiant temperature can produce a sense of 
comfort with a lower air temperature which can result in  
lower running costs without reducing comfort levels.