Mirwin, very nice setup. The Atlas goes through batteries for me every 6 months, and the Iris can go like a year and 6 months, so installing this on an Atlas make so much sense. I have 3 stations going myself, one of which is a Tycon Power version of the Ambient weather all in one osprey. I have never changes batteries in it, and I've had it for 2 years. I don't think the anemometer is spinning right at high speeds on the Atlas for me. The osprey reads higher, as well as the Iris. I like to use meteobridge to connect the stations, and Atlas does not work there. Seems to be pros and cons to each of these stations, with the thermometer in the osprey being too high at night, and slow to rise in the day.