FX-3500 Series

Intelligent Fire Alarm System


Mircom’s FX-3500 Series systems are powerful Intelligent Fire / Agent Release Control Units that are UL/ULC listed for fire alarm services, including releasing service.

The FX-3500 Series provides up to three intelligent Data Communication Links (DCLs) / Signaling Line Circuits (SLCs) that support a new AP protocol, which is faster and has capacity for up to 954 intelligent devices.

In addition, the FX-3500 Series has backward compatibility support for CLIP devices. The FX-3500 Series systems are recommended for both new and retrofit fire detection and/or special-hazard/critical-infrastructure suppression/special agent applications.

Capable of releasing up to six discrete physical hazard zones, the FX-3500 offers exceptional value for complex installations.

Elegant configuration options by onsite laptop, or when required by the Engineer of Record, by remote PC via modem, the FX-3500 can be operational with minimal set up time.

Programming versatility makes the FX-3500 Series the ideal choice for dependable fire detection, signaling and protection in industrial, commercial and institutional buildings.

Typically these environments require agent-based suppression solutions easily managed by the FX-3500 Intelligent Addressable Release Control Unit.

Features & Benefits

General Benefits

Intelligent addressable fire alarm with releasing control.

  • New fast AP protocol, extending number of devices on the loops, up to 954 (318 X3)
  • Panel supports both AP and CLIP protocol
  • Uses USB key for enhanced security
  • Utilizing cross-zoning or counting detection
  • Flush or Surface mountable with no additional hardware required
  • Utilizes the universal Mircom enclosure
  • The FX-3500 Series RCUs are fully expandable to meet the demanding requirements for mission critical facilities, both inside the high value asset areas and also in the office environments

Hardware Features

  • One onboard SLC/DCL communication circuit that supports up 318 addressable devices/points;
  • Expandable to three SLC/DCL communication circuits that supports up to 954 addressable devices/points;
  • Reliable and industry proven dedicated releasing power supply;
  • Six dedicated hazard zone LED indicators;
  • Convenient USB Programming port;
  • Built-in UDACT/DACT for remote monitoring;
  • Enhanced tactile response for operator interface;
  • 4 x 20 character Liquid Crystal Display (LCD);
  • Easy to read numerical keypad;
  • 10 Ampere (Amp.) Power Supply to satisfy typical releasing load requirements;
  • Four Class A/B Notification Appliance Circuits (NAC) rated at 1.5Amp. each;
  • SLC is capable of NFPA 72 Style 4, Style 6, or Style 7 wiring & ULC’s DCL-A & DCL-B;
  • Resettable auxiliary power supply;
  • Four easy to read status queues with selector switches and LEDs for Alarm, Supervisory, Trouble and Building Safety (Formerly Monitor) Input visual indications;
  • Supports up to seven remote annunciators;
  • Accessible multifunction RS-232 port for:
    • Audio Interface
    • Serial Communication interface
  • RS-485 Interface for remote LCD/LED Annunciators and other devices;
  • Optional City Tie/Polarity Reversal module for central station monitoring.
  • Cross-zoned or Counting Zone Smoke Detection programming to enable release by either counting active zone detection circuits or active cross-zoned detection circuits (includes options for single, double, triple and 2 different inputs counting zones)

Software and Operational Features

  • Audible alarm response within three seconds of activation in Advanced Protocol mode (when using AP devices only);
  • AP is a completely digital protocol;
  • AP is an Interrupt base protocol;
  • Individual LED Control;
  • Releasing capability for up to 6 Zones
  • Supports Pre-Action/Agent Release and Deluge Applications;
  • Supports up to 3 SLC loops and 954 points
  • Supports CLIP and AP System Sensor protocols;
  • Built-in strobe synchronization support for Mircom, Potter/Amseco, System Sensor, Gentex and Wheelock protocols;
  • Grouped inputs and outputs;
  • NACs can be configured as Silenceable or Non-Silenceable for both signals and strobes;
  • Group bypass with built-in false alarm prevention technology;
  • Zone Counting;
  • Built-in Drift Compensation for AP protocol;
  • Positive Alarm Sequence;
  • Configurable Signal Silence Inhibit, Auto Signal Silence, Two Stage Operation and One-Man Walk Test;
  • Relay contacts for Common Alarm, Auxiliary/Alarm (Disconnectable), Common Supervisory and Common Trouble;
  • Two event history logs comprised of a 400 event alarm log for alarm related events and a 400 event general log for all other events;

Mechanical Features

  • The FX-3500 supports both flush and surface mount applications;
  • Dimensions 26” x 14.5” x 4.2”
    66 cm x 36 cm x 11 cm
  • Modular display placement options;
  • Fits up to 2, 18 Ampere Hour batteries.
  • Durable CAT-30 lock and key.
  • Removable enclosure door.
  • Easy access to all modules for serviceability.

Additional Features

  • Compatible with INX-10A Addressable Intelligent NAC Expander Panel.
  • Supports Acclimate smoke detection sensors.

Parts of the FX-3500 System

Support / Literature

Contact Technical Support

Phone: 1-888-MIRCOM5 | (888-647-2665)


Documents and Downloads

Click on one of the three sections below for a list of downloads.

Sell Sheets



Control Units

PDF LT-1083 - FX-3500 Installation Manual

PDF LT-1083RCU - FX-3500RCU Installation Manual

PDF LT-1091 - FX-3500 Releasing Guide

PDF LT-1148 - FX-3500 Configurator Manual

Intelligent Devices

PDF I56-3313 MIX-5251AP-RAP-HAP - Intelligent Heat Detectors Installation Instructions (UL)

PDF I56-3321 MIX-5251APA-RAPA-HAPA - Intelligent Heat Detectors Installation Instructions (ULC)

PDF MIX-1251AP Ionization Smoke Detector Installation Instructions (UL)

PDF MIX-1251APA Ionization Smoke Detector Installation Instructions (ULC)

PDF MIX-2251AP/TAP/TMAP Intelligent Photoelectric Smoke Detectors Installation Instructions (UL)

PDF MIX-2251APA/TAPA/TMAPA Intelligent Photoelectric Smoke Detectors Installation Instructions (ULC)

PDF LT-899_INX-10A - Intelligent NAC Expander - Installation and Operation Manual

Remote Annunciators

PDF LT-617 RA-1000 - Installation and Wiring Manual

PDF LT-1093 RAM-3500-LCD - Installation Manual

PDF LT-1149 RAX-LCD-LITE - Installation Manual


PDF LT-1001 SRM-312 Adder Module - Installation and Operation Manual

PDF MIX-M500MAP Intelligent Monitor Module Installation Instructions (UL)

PDF MIX-M500MAPA Intelligent Monitor Module Installation Instructions (ULC)

PDF MIX-M500RAP Intelligent Relay Module Installation Instructions (UL)

PDF MIX-M500RAPA Intelligent Relay Module Installation Instructions (ULC)

PDF MIX-M500SAP Intelligent Supervised Control Module Installation Instructions (UL)

PDF MIX-M500SAPA Intelligent Supervised Control Module Installation Instructions (ULC)

PDF MIX-M501MAP Intelligent Mini Monitor Module Installation Instructions (UL)

PDF MIX-M501MAPA Intelligent Mini Monitor Module Installation Instructions (ULC)

PDF MIX-M502MAP Intelligent Zone Interface Module Installation Instructions (UL)

PDF MIX-M502MAPA Intelligent Zone Interface Module Installation Instructions (ULC)


Product Drawings

DWG Panel Drawing (AutoCAD)


Online Training

There are five online training modules for technicians who wish to work with the FX-3500 panel.

You must be logged in in order to take this online training.




Phone: 1-888-660-4655 x1073

Fax: 1-888-660-4113


Phone: 1-888-660-4655 x2040

Fax: 1-888-660-4113


Phone: 1-905-660-4655 x3040

Fax: 1-905-660-4113


Contact Mircom

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