Neptronic
I/O Modules

I/O Modules

Smart, Scalable and Seamless

How do Neptronic I/O modules expand HVAC control systems?

When your building automation system needs more inputs, outputs, or connectivity beyond what standard controllers offer, Neptronic’s I/O Modules deliver the expansion you demand: smart, scalable, and seamless. These BACnet/Modbus I/O boards integrate effortlessly into existing HVAC ecosystems, enabling precise monitoring and control across various zones, equipment, and systems.

From compact boards to high-capacity remote modules, our products are designed for flexibility, efficiency, and future growth.

What are the benefits of I/O expansion modules for building automation?

Icons for BACnet and Modbus.

Seamless Protocol Support

Native support for BACnet MS/TP and Modbus RTU, with optional BACnet/IP or Modbus TCP for IP networks.

Scalable Flexibility

Multiple models offering different I/O counts let you match the application, from small expansion to full remote I/O deployment.

Scalable & Affordable

Built for small to medium commercial buildings, IMS delivers enterprise-level control that easily scales as your system or facility grows, all at a cost-effective price.

MEET THE MODELS

CMMB-IP

A powerful Ethernet I/O module with 10 inputs and 10 outputs, integrated web interface, and optional router features, perfect for bridging IP and serial networks.

CMMB1020

High-capacity remote I/O board boasting 30 inputs and 20 outputs, ideal for large zones or complex control tasks.

CMMB100 / CMMB102

Compact “mini” versions:
CMMB100: 8 universal inputs
CMMB102: 4 universal inputs + 4 universal outputs

CMMB106

Balanced mid-range option with 10 inputs and 10 outputs for moderate expansion needs.

CMMB1322

Minimalist module with 2 inputs and 2 outputs, suitable when just a little extra I/O is needed with minimal footprint.

Frequently Asked Questions

What are Neptronic I/O modules?

Neptronic I/O modules are HVAC control expansion boards used to add inputs, outputs, and connectivity to building automation systems when standard controller capacity is not enough.

I/O modules are used to connect additional sensors, switches, actuators, relays, valves, alarms, and equipment points to an HVAC control system or BAS network.

Yes. Neptronic I/O modules support BACnet MS/TP and  Modbus RTU, with optional BACnet/IP or  Modbus TCP  available for IP network applications.

Neptronic offers several I/O module models, including CMMB-IP, CMMB1020, CMMB100, CMMB102, CMMB106, and CMMB1322, allowing different input and output capacities for small or large HVAC control applications.

Neptronic I/O modules range from compact expansion options, such as 2 inputs and 2 outputs, to high-capacity remote I/O boards with up to 30 inputs and 20 outputs, depending on the selected model.

I/O expansion modules make HVAC systems more scalable by adding field points without replacing the main controller. They help simplify monitoring, control, remote I/O deployment, and future system expansion.

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Contact

Head Office

National Environmental Products Ltd.

Neptronic

400 Boulevard Lebeau

Montréal (Québec) H4N 1R6 Canada

E-mail: contact@neptronic.com

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