--- type: product schema_version: 1 stock_number: "96401-2" canonical_url: "https://www.artisantg.com/TestMeasurement/96401-2/Excalibur-Systems-M4KSerial4-Avionics-Communication-Module" json_url: "https://www.artisantg.com/TestMeasurement/96401-2/Excalibur-Systems-M4KSerial4-Avionics-Communication-Module.json" generated_at: "2026-11-07T01:10:38.180Z" last_updated: "2026-04-29T19:05:39.180-05:00" --- # Excalibur Systems M4KSerial4 RS-232/422/485 Interface Module _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Excalibur Systems - Model: M4KSerial4 - Condition: New From Surplus Stock - Price: Quote only - Availability: In stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 5 lb - Shipping dimensions: 14X14X6 in ## Categories - Test Equipment > Telecom Test > Communications Equipment (primary) - Military and Embedded Equipment > Embedded & Industrial > Other Modular - Military and Embedded Equipment > ARINC & 1553 ## Details ### Configuration - (4) RS-232/422/485 Channels ## Images - -