The "psu" wireless network is the WiFi network on campus for smartphones, laptops, and tablets. Every building on campus has psu WiFi. Go to wireless.psu.edu for details on getting connected.
The "Roomgear" network is used in the Residence Halls for devices that are not able to connect to the "psu" wireless network such as gaming consoles, streaming devices, smart TVs, smart speakers, etc. Go to roomgear.psu.edu for details on getting connected.