Description

1. Product Title

Johnson Controls MS‑IOM3733‑0‑ Metasys IOM Input/Output Expansion Module

2. Product Overview

MS‑IOM3733‑0 is a field‑mount I/O expansion module for Johnson Controls Metasys building automation system. It provides 8 binary inputs and 8 binary outputs to expand point capacity for FC‑bus field controllers, supporting both FC Bus and SA Bus communication via BACnet MS/TP protocol. Binary output channels require external low‑voltage power supply for actuator driving. This module collects status signals from field sensors and sends switching commands to dampers, valves and relay devices. It resolves insufficient I/O capacity for HVAC, ventilation and lighting control loops, supporting DIN‑rail or wall mounting within local control cabinets for commercial and industrial building management systems.

3. Technical Specifications

• Model: MS‑IOM3733‑0
• Warranty: One Year
• Condition: 100% New & Original
• I/O Points: 8 BI, 8 BO (BO requires external <30V power)
• Field‑bus: FC Bus, SA Bus, BACnet MS/TP (RS‑485)
• Power Consumption: Max 14 VA
• Mounting: DIN‑rail / wall‑mount
• Operating Temp: 0 °C ~ +50 °C
• Certifications: UL, cUL, CE
• Protection Class: IP20
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4. Application Scenarios

• Commercial Building BMS Cabinet: I/O expansion spare for Metasys HVAC and ventilation control assemblies.
• Public Facility Automation Retrofit: Field signal acquisition replacement module for damper and valve control loops.
• Metasys System Maintenance: Drop‑in spare for installed MS‑IOM3733‑0 hardware.