Simple installation (MacBook Pro), just connect the internal USB module and insert the batteries (supplied) into the external module. No problem with the scope of external module (it is about ten meters behind a bearing wall). The measures seem clear: the outdoor sensor gives very similar results data from Météo France, and the internal sensor the same results as a conventional weather stations used for over 10 years. The CO2 sensor has issued an alert once (over 2.000ppm), normal we were more than 10 in the room for a night. After airy, everything is back in order. The smartphone interfaces, tablet and web are very well done, simple, user-friendly and very easy to use. Ability to program alerts all measured parameters. Ability to download in CSV or Excel data on the internet. One small problem, when an alert (eg CO2) is triggered the indoor unit lights up, but punctual way ... Finally, I've never seen light, not nayant eyes permanently thereon. It only remains for me Quà purchase the rain gauge and an additional module for the room, I'm too addicted to this gadget :-)
