4 position WiFi switch tested to legal limit. With this switch you can control your antennas anywhere in the world that has WiFi or cell phone service with an app for IOS or android. Greater than 45db of isolation. Great to have when your not sure if your antenna is connected to your rig when a storm is coming and your not at home. Also for the ham that likes to do remote operation. $115.00 shipped continental US. PayPal accepted, money orders. Checks accepted once cleared.