You are buying a lot of TWO Haliplex HPX-IM-1633-MPS Dual Multi Protocol Serial Interface Modules.These are genuine Haliplex Communication Systems plug-in modules for the HPX-1600 Multi-Service Access Platform (an STM-1/OC-3 SDH/SONET multiservice mux used in telecom, utilities, rail, and SCADA/industrial networks). Each provides two multi-protocol serial ports (supports RS-232/422/485 and similar low-speed protocols for telemetry, RTUs, PLCs, etc.).
NO RETURNS ON ITEMS LISTED FOR PARTS, REPAIR, BUYER TESTING
Key details from labels & engraving:

• Model: HPX-IM-1633-MPS
• Description: Dual Multi Protocol Serial
• Engraved: HPX-1633 2 MPS
• Part Number barcode: 004502000000
• Compliance: CE, FCC, UL US
• One serial: 0133110600034 (other has adjacent serial from same batch)
• Gold-finger edge connector for HPX-1600 chassis
• Includes original anti-static bags
• 
  

Condition – Important:
Open box / previously opened packaging. These are not new/sealed and have not been tested by me (no power-up, no insertion into chassis, no functionality checked). They appear in excellent cosmetic condition with no visible damage, scratches, or installation marks (labels pristine, gold fingers clean – see all photos). Stored in original box with foam/anti-static protection. Sold as-is for parts, repair, or buyer testing – no guarantees on working condition. Perfect spares if you have an HPX-1600 system and can verify them.
Disclosures:

• Smoke-free home
• Pet-friendly home (we have pets)
• Stored in clean, climate-controlled environment
• No returns on items listed for parts, repair, or buyer testing

Photos:
Detailed photos above showing labels, serials, engraving, connectors, and packaging from multiple angles. What you see is exactly what you'll receive – no stock images.Questions? Message me before buying – happy to provide more pics or details. I respond quickly and stand behind my descriptions. Thanks for looking!