Auto Calibration; Manual Calibration - Bresser Smile 7004020CM3000 Mode D'emploi

• Press ALARM ON/OFF button to activate
CO ALARM function,
2
• When CO value goes up to desired upper
2
limit value, alert rings and
ALERT MODE:
• Lower than 200 ppm, rings every 3 seconds
• Lower than 500 ppm, rings every 1 second
• Over 800 ppm, rings twice every 1 second
• Press ALARM ON/OFF button to quit alerts,
alert period is 2 minutes.
• Press ALARM ON/ OFF button, turn off CO
ALARM function,
• When CO value goes up to the desired
2
lower limit value, only
rings.
symbol appears.
flashes.
2
disappears.
flashes, no alert

AUTO CALIBRATION

The automatic calibration function means
that the sensor will intelligently judge the
zero point based on the environmental
concentration and calibrate itself after a
period of continuous operation (7 days).
Calibration takes place automatically every
24 hours after the unit has been switched
on. The zero point of automatic calibration
is 400ppm.

MANUAL CALIBRATION

• Find an area with fresh air, CO
than 400ppm.
• Press and hold UP button to enter manual
calibration mode. CAL letter flashes. This
process takes 20 minutes, after 20 minu-
EN
value lower
2
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