Macurco GBC-24-2 Gas Detection Controller (2 Relays)

Macurco GBC-24-2 Gas Detection Controller — 2 Relay Outputs

The Macurco GBC-24-2 is a gas-detection controller with two relay outputs that turns connected detector heads into a coordinated fixed gas detection system — driving ventilation and alarms from one panel, with staged response on its two relays.

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The Macurco GBC-24-2 is a fixed gas-detection controller with two relay outputs that drives ventilation and alarms from connected gas detectors in boiler and equipment rooms.

Key features

• Central controller that drives ventilation and alarms from connected gas detectors
• Two relay outputs for staged action — e.g. ventilation on low, shutdown/alarm on high
• Coordinates a fixed gas-detection system from one panel
• Designed for boiler and equipment-room gas control
• Pairs with fixed detector heads for a complete system
• From Macurco, a established fixed gas-detection brand

Specifications

Where the Macurco GBC-24-2 fits

• Boiler and mechanical rooms
• Parking-garage CO ventilation control
• Multi-detector plant systems
• Staged ventilation/shutdown logic
• Coordinating several fixed heads from one panel

What the Macurco GBC-24-2 detects (and what it doesn’t)

The GBC-24-2 is a controller, not a detector — it coordinates fixed detector heads and drives ventilation and alarms through its two relays. Pair it with fixed heads such as the Macurco PM100-CO or the Forensics EX LEL Detector and 4 Gas Wall-Mount Monitor. Use the two relays for staged action — ventilation at a low set point, shutdown or full alarm at a high one. The system protects the space; entrants still use a Portable Gas Detectors instrument for pre-entry testing.

Cross-shopping? This unit sits in our Fixed Gas Detection Systems hub alongside Forensics EX/LEL Wall-Mount, Forensics Hydrogen Wall-Mount, Forensics 4 Gas Wall-Mount, Macurco PM100-CO. For other gas-detection form factors see Portable Gas Detectors, Personal & Wearable Gas Detectors, Area & Transportable Gas Monitors, or browse the full Gas Detectors range.

Macurco fixed gas-detection family

• Choose the GBC-24-2 to centralise control and staged relays for a fixed gas-detection system.
• Add detector heads — start with the Macurco PM100-CO for CO.
• For combustible and multi-gas heads, see the Forensics EX LEL and 4 Gas Monitor.

Frequently asked questions

What does the Macurco GBC-24-2 do?

It is a gas-detection controller — it takes signals from connected detector heads and drives ventilation and alarms through two relay outputs. It is not itself a gas sensor.

What are the two relays for?

Staged response — for example, energise ventilation at a low gas level on one relay, then trigger shutdown or a full alarm at a higher level on the other.

Do I need detector heads with it?

Yes — the controller coordinates heads. Pair it with fixed detectors such as the Macurco PM100-CO or a Forensics EX LEL Detector.

Where is the GBC-24-2 used?

Boiler and mechanical rooms, parking-garage CO ventilation control, and any plant space where several fixed detectors need coordinated relays from one panel.

Can it control building ventilation?

Yes — driving exhaust ventilation is a primary function; the relays energise fans or shutdown circuits based on the connected detectors' readings.

Is it a standalone gas detector?

No — it is a controller. For a single standalone fixed detector, see the Forensics 4 Gas Wall-Mount Monitor.

How is it mounted and powered?

It is a fixed/panel-mounted, hard-wired controller; installation and relay wiring should follow local electrical code.

How many detectors can it coordinate?

It centralises control and provides two relay outputs for staged action; size your system with the heads and zones your space requires.

Does it replace portable testing?

No — even with fixed detection and control, pre-entry testing of a space uses a Portable Gas Detectors instrument.

Is it in stock and how does it ship?

Use the Amazon buy button for current availability and delivery timing through our fulfillment partner.

Does it need professional installation?

As a hard-wired controller wired to detectors and ventilation/shutdown circuits, it should be installed to local electrical code, often by a qualified contractor.

What gases does the system detect?

That depends on the heads you connect — CO from the PM100-CO, combustibles or multi-gas from the Forensics EX LEL and 4 Gas heads.