See below:

1. Whilst the rangehood is switched on and the motor is running, push the COUNTDOWN TIMER button. The display will show the number 9 and proceed to countdown to 0.
2. When the timer reaches 0, the motor and lights will turn off.

• To operate the lights, push the LIGHT button. To switch off, push the LIGHT button again.

The model number and serial number can be found under the filters.