Yes can be set to 30 min.

Hello Winkywankel, thank you for your enquiry and your interest. Yes, Peter can be used with small children without hesitation. The tower fan also had to pass such a test - a legal standard is required here. We will be happy to answer any further questions you may have. Your Stalder Form Team

The fan has 6 airflow speed levels. This allows precise adjustment to meet different ventilation needs.

Yes, the fan can be adjusted to up to 6 airflow levels. This feature allows precise customisation of the airflow to the user's needs.

have had the white one for about a year and the brown black one for 30 days, both still look great with no signs of discolouration

There is one, check it out: https://www.cleanairoptima.ch/ca-904c , costs around CHF 200.--. Galaxus may also be able to get it.