   </li>
    
        <li class="chapter " data-level="1.4.5" >
            
                <span>
            
                    
                    3.5 Wifi
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6" >
            
                <span>
            
                    
                    3.6 Rfid
            
                </span>
            

            
        </li>
    

            </ul>
            
  