Good summary - copied from ebay.de Amazon review - the part about the sensor in the base and creating an air gap seems quite important:
The running noise is a normal refrigerator very similar, only much quieter. In absolute silence very sensitive people will not be able to sleep next to the box, with a few meters distance but it is not heard. I am amazed that the compressor is so powerful and quiet. But the noise is not unpleasant. a very slight noise and a hum that comes from the compressor. Do not disturb the sound and I could sleep next to it. ;-) The displayed temperature should correspond to the temperature at the center of the box. So I assume that either the temperature sensor is installed in the cover or in the bottom. The display permanently shows the actual temperature, not the one that has been discontinued. I have never test -5 degrees and leave the box as far to cool. That is now almost 45 minutes and it shows me still -2 degrees. But usually we all know what has been set for a temperature. The box provides for 12/24 volt three different battery protection / Batterieschonmodi with. One can High, Med and Low Set. These three modes include different settings when the unit shuts down and turns back on when the battery voltage drops or rises again by charging. Auschaltspannung at 12V Low: 10,1V Med: 11,4V High: 11.8Vreclosure voltage at 12V: low: 11.1V Med: 12,2V high: 12.6V for 24V other values that I do not want to mention here, since most people safely operate this box with 12V apply. The data for 24V stand but in the manual in it. Furthermore, you can still change the temperature display from Celsius to Fahrenheit. What I do not like is the lid, which has about 1-2mm game. Although he attaches securely and there is a small sealing tape in the cover, but I can 1-2mm lift the lid and he play in the engaged state. Whether the now big effect on the cooling capacity / efficiency, I doubt it, but it's something where you could make improvements. The second point is the protection of the display. There no Plexiglascheibe sits between, but only a sort of thicker film. For a mobile box that is a little too thin and unstable. Otherwise, I can not complain and will test the weekend neatly on the 12V rail, the box. I am particularly interested in whether the box has an automatic switching between 12 / 220V. So a Vorangsschaltung. If 220V, the box runs with 220V, 200V are no longer available, the box takes the 12V. So you can connect both cable and sometimes applying and Stoppers on shore power on the box is no longer the precious battery power, but about 220V whether the box can, as reflected below 12V I will next week on weekends, the box was on the boat in use and unfortunately my initial enthusiasm has given way somewhat sobering. I had taken a large bowl with cottage cheese on the boat and it was on the bottom of the cooler. it lay a few drinks. It was planned weekend a campfire with delicious baked potatoes with cottage cheese for 7 people realize. There is only one temperature sensor in place and this seems to be built into the center of the bottom of the box.The feature has the negative effect that is jammed between glass bowl bottom the cold and there sure the displayed temperature of 5 degrees was, but I was wondering which would not be cold drinks. I put a thermometer on the covered bowl and there were 15.4 degrees at 22 degrees outside temperature. What should I do now? Quark take out, the safe until the next evening would be bad then or waive chilled drinks ... I turned the temperature low to minus 10 and then I had the top of the glass bowl 7 degrees and was probably at the bottom of the bowl of curd now frozen. at the next day then people came and brought a lot of grilled sausages and meat and despite a good Tetris game, I did not get everything in the box. here failed the box completely and did not get cooled down the food. The thermometer showed after 6 hours still 15 degrees to 20 degrees outside. We wanted to eat everything in the evening, which was not so tragic, but after two days I would not want to eat the meat and sausages. Since the box at full configuration failed mercilessly and also by design has Nachholungsbedarf I prefer here a ZIP code. Because of the low set temperature, the compressor was of course at the time and has been consumed electricity. Otherwise, it can be said that the power consumption and the volume (on a boat almost inaudible ) and the cooling is good if you only have a few things in the box to drink as 2 yoghurts, sausage pack for bread and two or three bottles. But if I really need such a large box for the amounts it was time to be seen. Two other sensors (Centartikel) and the average of all the sensors would be optimal. However, only one block to the ground just leads to cold storage and the rest stays warm and at full box to an almost nonexistent cooling. The manufacturer should have 2.10.205 I am still satisfied with the box and when the deficiency is aware of the location of the sensor, then try not deliver this. Furthermore, the display appears to be somewhat inaccurate. I have 2-5 degrees (depending on ambient temperature) deviations between the displayed temperature and the temperature actually present in the box. I ask why always 2 degrees less a than I need. So if I want to have 5 degrees in the box, I have to set 3 degrees. The fuller the box, the higher the deviation. What's left to say that switches the box automatically between 12-220V. Tested When compressor is running, the transition from 22ß to 12 volts without interruption. The compressor will continue uninterrupted. From 12-220V, the compressor switches off and goes after about 4-7 minutes if needed again. So you can now connect both cable and if you have shore power to supply the box from the 220V power . update 12/2015 still the box works fine and I can sure make a purchase recommendation.Ultimately remain for me 3 minuses. cover has clearly too much play, displayed temperature deviates partly up to 5 degrees of itself squarely located in the box temperature from and apparently centered in base built temperature sensor, which can lead to poor cooling when there is something on it and so the cold Staut. As a solution to this problem, I will .zB build a small stand me from chicken wire, which is as big as the bottom of the box and 2 cm high. Inserted in the box can they now assemble freely and there on the floor now 2cm airspace is to circulate the cold better.
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