The Roadlink™ C2 product is designed specifically as both a Wi-Fi extender and 4G LTE router. This allows you to utilize a boosted campground Wi-Fi signal from within your RV, or use the high-gain 4G LTE antenna for your Wi-Fi inside your RV.
You can switch between those two sources, all while staying connected to the same private and secure Wi-Fi network within your RV, using your phone without interruption, and not burning through your traditional cellular phone data plan.