I made a story about the watertank https://drive.google.com/file/d/1X9rJbey...sp=sharing
My DS2 came from the care-supplier (in NL there are suppliers that are payed by the health ensurance, they supply several brands).
Compared to the DS1, the DS2 seem to make a bit more noise but the airintake is on the other side.
In my case the DS1 intake was directed to the wall, the DS2 intake is directed to the middle of the room.
The biggest disadvantage of the DS2 is that it can't be used without the humidifier. It is an integrated part and you can't fit a hose to the ventilation unit.
Also the heatplate is fixed to the ventilation unit.
Not able to detach the humidifier means that the unit needs more space, a problem when traveling by motorbike.
I have a mail from Philips that there is no problem with submerging the lid of the watertank in water for cleaning.
An advantage of the new watertank is that you really can empty it, in the DS1 tank there was always water left.
Also the metal plate of the tank is better accessible with a toothbrush for cleaning, but you still can't reach all the places below the duct.
When carrying the tank filled with water (up until the mark) you need to tilt it so that the air inlet/outlet is a bit up otherwise water will exit through the duct.
There is a problem with cleaning the ventilation unit. Where Philips describes replacing the hose after 6 month and cleaning the watertank there is not a word about cleaning the duct through the ventilation unit. I also did not get an answer about this issue from Philips.
When using the Humidifier, ambiant air comes from the ventilation unit and goes into the humidifier.
Here the air picks up some watervapour. This damp water goes back through the duct in the ventilation unit to the hose.
So every night there is moist air going through this duct without instructions to clean it.
Plants like to be watered on a regular basis.
There is another point (I read about it and thought "I did use that function") you can't pre-heat the water in the tank. With the DS1 you could set it to pre-heat the water for half an hour in order to have warm, moist air when you went to sleep.
When using the DS2 off grid you can use the same 12V cable as for the DS1. Unfortunately the DS2 likes an angled connector.
You can try to find an angled version or try to accomodate for the straight connector.
In my case when I'm camping the air in the tent is humid enough and I don't want the humidifier to drain my battery so it will be turned off and there will be no water in the tank. In that situation it should not be a problem when the DS2 is placed at an angle or even upside down.