Disable or Expand authTimeout in one of pages

I have searched for this problem in some days but no luck, hope somebody can help me.

In main.php:

'modules' => array(

            'customer' => array(

                'components' => array(

                    'user' => array(

                        'class' => 'customer.components.WebUser',

                        'allowAutoLogin' => true,

                        'loginUrl' => '/signin',

                        'authTimeout' => 300,





This means in all controllers of module customer, timeout duration = 300s. But i want in one of those controllers, there will be no timeout, or simpler set a longer timeout duration (86400 for example).

Thank you all.