Conclusion:

With the plug you can remotely switch off a lamp and device via the Zigbee protocol. It works fine with the Ikea and Homey gateway. It also works with the Philips gateway, but it is a bit difficult to install.

The intermediate plug has no energy measurement. You often see this with Z-Wave between plugs. It's not super slim and feels a bit plastic.

Finally, I think it's a shame that there is no button to turn it on or off. So keep this in mind when purchasing.

What you also have to take into account when using the Ikea Gateway is that you need another device to install it. This could be a remote control, for example.

So: Are you looking for a simple and cheap intermediate plug? Then the Ikea Wireless plug-in socket is a great solution.