For some time I use the Ansmann ZeroWatt outlet that is connected upstream of the power strip. It works perfectly. If I want to television, I press the button, which can be easily placed within reach. Once the devices have a short time in standby, the Zero Watt power switch off. This worked so far always reliable. The teach-in function is therefore perfectly. So you switched the devices not in operation, nor can the power in standby continue.
Design and processing are in order. The wired switch is not the best, but okay.
The product gets four stars, with tendency to five if they continue to work as well as before.