Not entirely sure what this is other than an obvious 12v to 110v inverter. There is a video socket that looks to be BNC that is hand labeled "Monitor" and "3.599545mhz". What would that be for?
I tested the 12v to 110v, it's working fine. There is also a hole in the front plate labeled "Variable" that has nothing in it.
If anyone knows what the video socket is for please let me know.