So easy to setup, just follow the instructions and it's up and running in a matter of minutes, as for the ACCESS unit it work really well on my laptop and desktop computers, but be prepared to wait until it syncs - can take several minutes, it has lots more information than on the main display. This replaced a 12 year old La Crosse unit that had no support. I could not register the unit but Support replied within hours of my query.
I have had the weather station for about 3 years. The temperature reading can be way off. The sensor is in the unit and in the sun it will heat up much higher than what the temperature should be. I know this because I have an Acurite temperature sensor that is placed in the shade. The batteries are new in the unit so that is not the problem.