The 10 PC TUBE Phoenix Contact 2961367 General Purpose Relay REL-MR-4,5DC/21 is a high-quality product made by the reputable brand Phoenix Contact in Germany. These relays are designed for general purpose use and operate on DC current. With a total of 10 units included in the package, these relays offer reliable performance for a variety of electrical applications, making them a valuable addition to any industrial or commercial setting.