The 215 Atlas Selector (All Scale), with Part Number 150 - 215, is a great choice for your railroad. It's excellent for dividing your railroad into 4 power districts for multi - train operation. The top position gets power from power pack A, the center position turns it off, and the bottom position gets power from power pack B. Four single - pole, double - throw switches enable two - cab operation for four blocks. You can couple multiple units together to control additional blocks without the need for inter - switch wiring.

Using the 215 Atlas Selector is easy. First, decide which power pack you want to use. If you want power from power pack A, set the selector to the top position. To turn it off, move it to the center position. And if you need power from power pack B, put it in the bottom position. When using it for multiple blocks, simply couple the selectors together as needed. There's no need to worry about wiring between the switches. As for maintenance, keep it clean and free from dust. Check the connections regularly to make sure they're secure. If you notice any issues, like loose switches or bad connections, have it inspected by a professional.