Where should I place the AC1200 extender for the best WiFi coverage?

Place the extender halfway between your WiFi router and WiFi device for the best performance. Ensure there is a clear line of sight between the extender and both the router and your WiFi device. Although the extender works in both horizontal and vertical positions, a horizontal position might give better performance. During initial setup, place it close to the router, then move it to its permanent location after establishing a connection.