Delivery by Amazon = perfect. The device looks good. Is compact and high quality processed (except for the temperature controller!). The attachment to the wall (always observe the instructions!) Is quick and easy. The temperature setting is antediluvian. It is difficult to understand why a company offering a brand such amateurish attitude. I want to keep my Aussensaunavorraum frost. Frost free means (I think not only for me) as soon as the temperature is likely to fall 0 degrees, the frost guard starts up, thus making his name the honor. But probably I never pay attention in physics. Because this device jumping immediately. No matter how hot or cold the room. Set to the lowest level (ie according to the manufacturer at 5 degrees), the thermostat goes only at a room temperature (measured exactly!) Of 18 degrees from. Hello? Are you crazy !? Should I run consistently with 500 watts in the winter the unit? At the current prices? Dear manufacturers! Then the appliance do not call FROST PROTECTION - but HEATER! As this I set him a well, because he is only fit to on another occasion. But frost guard? No thanks!