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Snooze

• When thealarm sounds, press [ SNOOZE/LIGHT ] to temporarily silence thealarm

for 5 minutes. Thealarm symbol will continue to ﬂash.

• To permanently silence thealarm, press one of theother buttons: [ CHANNEL/+ ],

[ MODE/SET ], [ MAX/MIN/ALARM ] or [ HISTORY/− ].

Calibration

• If theconnected sensors display inaccurate values, they can be recalibrated.

To calibrate thesensors properly, you must have reference values from meters/

sensors that you know give accurate readings.

• Thecalibrated value can only be displayed on theindoor unit. Theexternal

thermometers/hygrometers always show theuncalibrated value.

• Therange for relative humidity is always between 10 and 99%. It is not possible to

adjust thevalue beyond this range.

• Press [ CHANNEL/+ ] or [ HISTORY/− ] to increase or decrease theselected value.

To change thevalue more quickly, press and hold thebutton for 3 seconds.

• Press [ MAX/MIN/ALARM ] to reset theadjusted value.

• To complete thecalibration and return to thenormal display mode, press

[ SNOOZE/LIGHT ] or wait for 30 seconds.

Temperature

1. In normal mode, press and hold [ MODE/SET ] and [ CHANNEL/+ ] simultaneously

for approx. 5 seconds to enter calibration mode. Thevalue for theindoor unit’s

temperature will begin to ﬂash.

2. Adjust thevalue to correspond with your reference value. Thevalue can be

changed in steps of 0.1 °C.

3. Press [ MODE/SET ] to calibrate theexternal sensor’s value.

4. If you have several external sensors connected, press [ MODE/SET ]

repeatedly to scroll through thechannels (1–8) and adjust in thesame way as in

point 2.

Relative humidity

1. In normal mode, press and hold [ MODE/SET ] and [ HISTORY/− ] simultaneously

for approx. 5 seconds to enter calibration mode. Thevalue for theindoor unit’s

humidity will begin to ﬂash.

2. Adjust thevalue to correspond with your reference value. Thevalue can be

changed in steps of 1 %.

3. Press [ MODE/SET ] to calibrate theexternal sensor’s value.

4. If you have several external sensors connected, press [ MODE/SET ] repeatedly to

scroll through thechannels (1–8) and adjust these in thesame way as in point 2.

Cotech FT0203 User Manual

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