I need help identifying an item distributed by Precision Scale Co. based in Woodland, CA. I have two packages each containing one item as shown in the attached photo. For the photo, I removed one item from its package and left the second in the package. The packaging provides no identification of this item and there are no instructions. The package does specify "O/S/HO" Scale, so this is clearly a general purpose item. It has been suggested that this is a constant light circuit, but I don't understand how that's possible. I performed the standard electrical tests on this item, but they were inconclusive. The two metal leads seem to be directly tied together. Does anyone recognize this item?