User Manual
Page 63
... wireless LAN is a compact easy-to 40 meters between the client and the access point. The optional built-in wireless LAN is backward compatible with a 64-bit/128-bit Wired Equivalent Privacy (WEP) encryption and Wi-Fi Protected Access (WPA) features. otherwise, the information transmission without encryption might be visible to others.
... wireless LAN is a compact easy-to 40 meters between the client and the access point. The optional built-in wireless LAN is backward compatible with a 64-bit/128-bit Wired Equivalent Privacy (WEP) encryption and Wi-Fi Protected Access (WPA) features. otherwise, the information transmission without encryption might be visible to others.