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621-9938

Customers rate us 4.9/5 based on 778 reviews.
Brand: Honeywell
Order Number: 621-9938
Type: Serial I/O Module
Country: USA
Low stock: 100 left

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Overview

621-9938 is a Honeywell Serial I/O Module (SIOM) with dual communication ports and front status LED.

Functions

  • Slot installation: N

  • Terminating resistors: 200 / 300 Ω (2 per SIOM at end of link)

Communication

  • Ports: 2 (redundant serial I/O lines)

  • Optional accessory: 621-9928R SLS

Configuration

  • DIP switches: 4 × 8-position, 1 × 4-position

  • SW1 address range: 0–2032 (step 8)

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