For use in rooms with limited heating demand value, the device is quite suitable, in rooms with permanent drafts or relatively high rooms with more than 30 m², it is, however, insufficient. The LED is lit even if the power is not quite as bright, but sufficiently visible, continue. It reveals itself, at least if the device is connected or not. In operation on the smallest heating level (1000 W) the noise level is 50 dB (A), if this is bothersome or still be too loud like every user assessed differently. The fan itself is certainly potential for improvement, however, is doubtful at this price that the manufacturer takes this into account. While the unit can be set up discreetly whether its relatively small footprint, the design as a whole, I would like but as not just smart judge, since the thermostat is still miterwärmt minutes by heating the heater especially after shutdown. With "Made in China" manufacturing quality falls accordingly inferior, despite the well-known brand name can not convince, it is and remains the ultimate Chinese scrap. Finally, I have the only reason I chose the device, because it in this price range is the lesser evil in comparison with other products.