Sure... But does a typical household need this. My point was that I'm not sure that $170 for these sensors makes sense for me. And I suspect that most people are in the same boat as me. Maybe a sane answer for someone truly interested in the CO2 sensor and such for say 5 rooms is one of these in a central room and Vindstyrkas in the others. Otherwise you're talking about $1150... Which most people just aren't going to do.