Outdoor 4G and 5G antennas are usually deployed in situations where the router position indoors with the standard antennas supplied with the router gets a poor indoor signal, but there is a much better 4G or 5G signal outdoors.
In these cases, then an outdoor antenna can be positioned where the signal is strongest and the antenna cable can be connected to the indoor router.
Another example would be if the router is installed in a kiosk or street furniture and the construction of the cabinet reduces the signal to the router installed inside the cabinet. In these cases an outdoor antenna mounted on the roof of the enclosure or a wall mounted antenna on the side of the cabinet can be used to deliver the outdoor signal to the router inside the kiosk.
GXS606
Dipole Antenna supplied with Stainless Steel Wall Bracket. Can be used singly with a 4G router, but would recommend using two of these connected to Main and Aux ports of your 4G router, or four of these when connecting to 5G routers with 4 x antennas ports.
GXS606-DUAL
The Fullband GXS696DUAL combines two of the popular GXS696 Outdoor 5G antennas onto a single wall mounting bracket making it easier to buy and install multiple GXS696 Antennas for use as a 2×2 MiMo Outdoor 4G / 5G antenna.