I bought and found that indeed is given the protection function and the tripping current as required is less than 30 mA, but the adapters heat up independently of the switching state or the connected device 2 of this personal protection adapter. A measure taken by the adapter electrical active power then was the cause of warming: The adapter automatically receives 1.85 watts from the mains, which are at 25 cents / kWh about 4, in 16.2 kilowatt hours - costs Euro! In the information provided by the seller to the technical data and the "package insert" of the product packaging of this captive nothing to find. Actually, that's a reason to give the device to the seller back. Euro / year - but considering the fact that a safety socket with a built-in safety switch the not consume any power has clearly cost more than 100 euros, relativize the 4. The 2 star gets the adapter Not for functional defects, but only because of the lack of indication of own consumption.
