PM41S00 - Veeder-Root / Eagle Signal 12 VDC power supply The model PM41S is a 12 VDC power supply module. It provides power to user accessories and to the PM31 relay modules. All field connections are made through terminal strips. The module has switch selectable line input voltage, 115/230 VAC. A unique connector system distributes power to other SNAPTRACK modules in a daisy chain configuration. Comes complete with SNAPTRACK for mounting