You can choose between the following levels: 40 % relative humidity (1 blue LED), 45 % (2 blue LEDs), 50 % (3 blue LEDs), 55 % (4 blue LEDs), continuous operation (5 blue LEDs).

No, I have the Oskar little. You can only switch it on and off and adjust the strength. This is broken down to 3 levels. However, you can't see the current humidity in %. You have to check this yourself. As far as I know, these models: https://www.galaxus.ch/de... should be able to do this. (are air purifiers and humidifiers)