The Kasa KE100 leaves a really good impression when tested. Installation is easy, the app is clear and offers more functions than you would expect at this price. The quiet operating noise, the reliable connection and the many automation options are particularly positive. If you want to reduce your heating costs and at the same time get into smart heating in an uncomplicated way, the Kasa KE100 is an...

Smart heating is particularly inexpensive with the thermostats, but not necessarily good: the controllers are solid, but the batteries are behind a rickety plastic cover, which makes changing them a bit tricky. More annoying in everyday life: the high measurement inaccuracy and the somewhat dark display that lights up diffusely at night.