This listing includes 10 brand new items: an ABB relay base (model number 1SNA607201R1300) and an Entrelec relay (model number 31 810.12) with a voltage range of 24VDC-58VDC. Both items are designed for use in electrical equipment and supplies, specifically in terminal blocks and wire connectors. The ABB relay base is compatible with the Entrelec relay and other similar products. These items are ideal for use in a variety of settings, from industrial to commercial, and are sure to meet your electrical needs. Buy with confidence knowing you are getting quality products from trusted brands.