User Manual

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2.7 ECO MODE (ENERGY SAVING)
The ECO mode is used when the device is left to measure the air quality in a room over a longer period.
The backlighting and the buzzer are deactivated, and CO
2
is measured only once every 10 minutes. This saves the batteries.
In addition, the device sets itself to sleep mode at night, from 4:30 p.m. to 8:30 a.m. These times can be programmed using the
Data Logger Transfer software provided with the device (see § 3).
In the ECO mode, the measurement is more sensitive to instantaneous variations of CO
2
. For example, if the user
breathes near the device, it may throw off the measurement. It will be necessary to wait for the next measurement to
recover the true concentration of CO
2
in the room.
2.8 P_REC MODE (PROGRAMMED RECORDING)
When the device is connected to a PC, you can program a recording session (see §3). There are two types of programmed
recording sessions:
 Locked recording, in which the device displays nothing except the P_REC symbol (blinking before recording starts, then
steady while recording) and the keys are inactive.
At the end of recording, the device switches itself off.
 Unlocked recording, in which the device displays the measurements. The P_REC symbol is displayed, blinking before
recording starts, then steady while recording. The device operates normally. It is not possible to change the mode, but the
MIN MAX, HOLD and backlighting functions can be used.
Pressing the button has no effect.
To stop the function