TP-Link 300Mbps Universal Wifi Range Extender (TL-WA850RE)

I've been using this quite sometimes to amplify weak Wifi signal from my room in the upper floor to the living room in the ground floor at a distance about 20 meters away. Despite of the room door present  as a barrier to block the signal - the amplified output by the TP-Link device is working good as though it is near the Modem itself. So this is definitely a recommended wifi signal range extender for home use. The configuration and settings of the device is pretty simple and it comes with a disk software installer. The configuration is done only once and the next usage is simply plug to the wall power socket and turn on the internet Modem. It then communicate with the Modem wifi signal and amplify around the area it is plugged in.