How can I connect the XL824 to my network?
The XL824 can be connected using four options: Wi-Fi connection, WPS (Wi-Fi Protected Setup), Hidden Wi-Fi network connection, or Ethernet connection. For Wi-Fi, navigate to Home > Menu > Settings > Network > Connect to WiFi Network and select your network, then enter your password. The XL824 also has an Ethernet jack on the back for CAT5 cable connection.
From the official Trane XL824 Smart Wi-Fi Thermostat manual, page 22
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