Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G2589-20044 Repeller, 5975 239,26 € G3170-20126 Entrance Lens Assembly (HM) 203,37 € G3170-60416 5977 CI 350 Repeller Heater assembly 897,23 €