4210-01-123-7286 (810-2-700012-43)
4210-01-123-7286 is equivalent to manufacture part number 500-821790. It is a relay module and is classified under Federal Supply Class 4210 (4210 - Fire Fighting Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4210 - Fire Fighting Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.