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Power: Use to limit the surface
temperature of electric panel heaters.
Floor temperature calibration: Use
a thermometer to measure the oor
surface temperature and calibrate
accordingly.
Air temperature calibration: Use
a thermometer to measure the air
temperature and calibrate accordingly.
Display brightness: Adjust the
brightness of the active screen.
Eco temperature for heating
program: Adjust the lower Eco
temperature used in the heating
program.
Optional external relay Eco
temperature: It is possible to wire
an external pilot signal relay to the
BT21. When a signal input is received
the thermostat will change to this
temperature.
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