czjutai model no jt-dc120v0500 ?

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Searches for jt-dc120v0500 return information from here...
http://productspec.ul.com/document.php?id=EPBU.E200916
Direct-plug-in and Cord-connected Class 2 Power Units
Listed in two Sections...
Class 2 Inherently Limited Power Supplies for outdoor use
Class 2 Power Supplies, Indoor Use.

Some kind of adaptor - AC in and something else out...
Voltage in - Voltage Out - Power in Watts are the important numbers - style of connection and your country also important.

And just what is the Tip that's broken off - broken off what?
What does the tip actually do?

Try again...

Good Luck...
May 2017