User's Manual
Unitech Part Number: 400412   
13
2. Communication 
2.1. USB communication 
To connect HT580L to PC via USB, you need to install USB driver which will redirect 
data to virtual COM port. You can get USB driver from HT580L CD. 
Window OS will prompt new device dialog box when PC is the first time to be connected 
to HT580L via USB. Please re-direct driver folder to Unitech’s USB driver folder and 
then follow its prompting to install driver. 
Then you can check correct COM port number from Control Panet  System  
Hardware  Device manager, then you can find correct COM number from “USB 
Serial Port” under option “Connection Port(COM and LPT)” 
In HT580L, you should change it default communication port to “RS232/USB” from 
Setting  Supervisor  Comm  Port 
2.2. BlueTooth communication 
To do BlueTooth communication, you should change HT580L’s port setting to 
BlueTooth from Setting  Supervisor  Comm  Port 
In PC, you should connect Bluetooth dongles if there is no Bluetooth support. And 
Bluetooth driver should be pre-install. 
Then , you must follow up below steps on you rPC 
1.  Power on HT580L and then Run Bluetooth manager from PC 
2.  Click “New Connection” buttom 
3.  Select proper mode – Express Mode or Customer Mode. User can specify COM port 
number if select customer mode. 










