If you want wifi in your shop, I can highly recommend this gizmo. My shop is all metal skinned and about 75 feet from the house. I got no wifi or cell service inside at all before I installed this. The antenna is mounted external to the shop and points at the window where my router sits inside the house. The cable is run inside the shop to a smaller router/antenna/whateveritis box. Presto, wifi and cell service from the wifi. It's a beautiful thing!