Vivotek CC9381-HV User Manual page 21

VIVOTEK
Some, but not all special ASCII characters are supported: !, $, %, -, ., @, ^, _, and ~.
You can use them in the password combination.
13-3. Another prompt will request for the password you just configured. Enter the password
and then you can start configure your camera and see the live view.
User's Manual - 21