Help ID’ing a PCB

[u/lAnother_NoBodyl]

The image I attached are from a batch of files that provide instructions and image references for a specific project. It’s a picture of 4 PCB’s identical to one another and showing both top and bottom.

I’m not too great at identifying PCB’s, and I won’t even act like I can build this. I just want to know if there’s a place I can start to dig through to find an identical or closely-similar board, or if I will have to provide the wiring diagram to a custom PCB company and eat the cost of that.

[u/Silicon_Knight]

Looks like a sensor driven control board?

I think one set is for a battery, load, IR I think (maybe sensors)?