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OptiFlex™ I/O Expander

BMS & Control Automated Logic BUILDING CONTROLLERS
OptiFlex™ I/O Expander
FACILITY CONTROL

OptiFlex™ I/O Expander

Scalable I/O expansion for OptiFlex™ BACnet building controllers
The OptiFlex™ I/O Expander FIO88u provides a flexible and installation‑friendly solution for expanding input and output capacity on OptiFlex™ BACnet Building Controllers, supporting system growth while maintaining seamless WebCTRL® integration.

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Features

I/O Expansion Capability

Expands the input and output capacity of compatible OptiFlex™ BACnet Building Controllers, supporting increased system control requirements.

Local Service & Updates

Includes a USB port for local device updates, simplifying service and maintenance tasks.

Flexible Mounting Options

Supports DIN rail or screw mounting, allowing installation in control panels, mechanical rooms, or equipment enclosures.

Seamless WebCTRL® Integration

Integrates directly with the WebCTRL® building automation system, maintaining consistent system visibility and management.

Specifications

Controller Compatibility

The FIO88u is compatible with the following OptiFlex™ BACnet Building Controller models:

OF1628
OFBBC
OF1628‑NR
OFBBC‑NR
OF028‑NR

Connectivity & Expansion

The expander connects directly to the host OptiFlex™ controller to extend system I/O capacity without requiring additional standalone controllers.

Service Interface

A USB service port is provided for local firmware updates and device servicing.

Mounting & Installation

Supports DIN rail or screw mounting, enabling flexible installation in a variety of approved locations.

Technical Documents

Document Name Description Document Type Language Action
OptiFlex™ I/O Expander (FIO88u) Spec Sheet PDF English Download
Modbus Protocol OptiFlex™ I/O Expander (FIO88u) Modbus Protocol PDF English Download

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    calculation analysis, and technical data required for project design.

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    Aftermarket Service

    Request support for warranty claims,
    scheduled maintenance, and genuine spare
    parts ordering.

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    For more information : ahi@ahi-carrier.com