The Stanley SAA3931 is a two-pole automotive relay designed for use in vehicle electrical systems. It features a copper alloy contact and is rated at 15 amps at 28 VDC. This relay operates with a coil voltage of 12 VDC, and offers a fast switching speed, low contact resistance, and long service life. It is also RoHS compliant, and offers a cost-effective solution for a variety of applications.