How This Works: Wi-Fi Extender: These plug into an outlet midway between your router and your dead zone. They grab the existing signal and pump it into the room where you need it. If you put the extender in the exact dead zone, it will rebroadcast a weak, unusable signal. It must be placed in a "middle-ground" location where the signal from the main router is still strong.
Frequency range 2.4Ghz. It comes in the original box with instructions. This one was tested and it works great!