The Alco Connect 6020 determines the breathed air volume while expiration procedure and takes a sample
after 1.2 liters (standard setting).
- Switched on by pressing the key

- The device performs a self test of the internal functions and components.
- During the self test phase the device version, the software version and the next date of calibration appear on the display for about 2 seconds.
- After 3 seconds the device is now ready to start measuring (green LED blinking at an interval of 1,5 seconds). The display shows "ready".
- During sample collection the test person must breathe into the device with a sufficiently large respiratory flow, evently and without interruptions.
- A proper blow-in procedure is indicated by an audible signal and the flashing yellow LED.
- The blow-in procedure is finished if no audible signal is present and the yellow LED turns off.
- After evaluation of the sample, the result is displayed.
- Press key
to set device in operation mode for a new measurement.

| No. | Description | No. | Description |
| 1 | On/OFF button | 8 | OK button |
| 2 | Select key | 9 | RS 232 interface |
| 3 | Display | 10 | Expiration aperture |
| 4 | LED red – Error signal | 11 | Device label |
| 5 | LED yellow - Measurement in progress / Attention |
12 | Battery compartment opener |
| 6 | Mouthpiece port | 13 | Battery compartment lid |
| 7 | LED green - Ready for measuring |






