Outside Sensor: has communicated the first time coinciding with the base (few seconds), was good for a few months.
If dropouts purely fetched placed next to the base, worked again.
Battery change now. First outdoor sensor batteries, then base all works, except for the connection to the external sensor. WLAN off, phone, everything from, waited several times probiert- nix.
Other batteries.
No Success.
No matter what this product cost, it was cumbersome, unreliable and thus a constant pain in the ......
Can not recommend it unfortunately.