The part does what it should, the settings are absolutely sufficient for the car. I had the problem that all VAG vehicles (Audi, VW, Skoda, etc.) there is only one continuous current. These will be of the caravan manufacturers but for example. only the refrigerator light set. But not the actual fridge. For this would have to be laid at the car an additional line. Cost around 800 euros at Skoda 300 and Audi. I have completed the remedy with this little device and connected it between the fridge supply and steady plus from the trailer. About the outstanding adjustment will be recognized, above the alternator from the towing vehicle provides sufficient voltage and thus the turned in my case refrigerator. If the vehicle is parked, the battery voltage drops rapidly below approx .. 12.6 volts (usually already at ignition) and the refrigerator will switch off. About a pilot light can all be super set. Below the device has an aluminum plate, this I have with thermal grease coated and mounted on the metal skin from the caravan. (Holiday Test already passed)
