Unfortunately, only limited functional

Operation is simple, fast, everything is turned on and set up.
The first device was round 2 weeks in use before the outside temperature indicator was defective - of course with proper operation and use. Machine number 2 was then to use only 4 days. Again, the outside temperature display far beyond reality (display round 22 degrees; in fact well below zero).
Praise for Amazon.com: Return and replacement procedures quickly and easily.