Before deciding to purchase the Devolo repeater, you should ensure that you can- really make the easy installation of a button and that's only possible if the router also has the mentioned in the description WPS button. If the device is installed after the easy to understand instructions, it improves reception spĆ¼rbar- and also visible (Green bars). One downside: the three-year warranty will be granted only if you send a contribution of the unit with RMA number. What is the RMA number, and where to find them, is unfortunately nowhere betrayed. The RMA number but seems to be something that GBT only in Germany, since it is not mentioned in the foreign warranty. Otherwise: a gratifying new acquisition.