This is a 10mm panel mount green LED indicator light.
This indicator light has a forward voltage of 12VDC and can be snap-in panel mounted in an 10mm diameter hole.
These are great power indicators for your enclosed project.
These lights come with bare wire leads.
There is a resistor in-line with the green LED which keeps it from burning up at 12 volts and the unit as a whole draws less than 20mA of current.