Where is the best location to place the RE220 extender for optimal performance?

Plug the extender approximately halfway between your router and the Wi-Fi dead zone, ensuring the location is within the range of your router. Wait about 2 minutes until the Signal LED turns solid green; if it doesn't, relocate the extender closer to the router. To minimize signal interference, choose a location far away from Bluetooth devices and other household electronics such as cordless phones, microwave ovens, and baby monitors. (Page 13)