Tenda w150d User Manual page 22

The device provides wireless feature, it is advisable to secure your
wireless network with encryption.
Use the interface below to fast secure your wireless network (Only
a catchy security key is required) or go to Advanced (click the
"Advanced" tab on the upper right corner)–Wireless--Security for more
settings (Apart from the security key option, you can select a security
mode and a cipher type that best fit yourself or keep the defaults thereof
unchanged. Detailed settings for the latter option, refer to Section 4.4.2
herein).
The interface below allows you to setup a security key that allows
8-64 characters. The security mode and cipher type is preset to
WPA-PSK and TKIP+AES by default.
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ADSL2/2+ Router