There are two debugging ways(Only developer version POS can be debugged):
a.USB connection way
It need enable USB Mode, enable USB debugging option, and connect the device to PC with USB cable.
b.WIFI connection way(network)
It need not enable USB Mode. But it need enable USB debugging option. And need not connect the device to PC with USB cable.
Please open below link and download the guide document.There is details in it.
http://service.telpo.net:8091/index/user/fetfile?key=NVHMcCj01Y9ZgSpO
What is the account password to open the debug mode?
Account:telpo
PSW:86337898