The Crowcon DuoIQ: Dual Gas Detector with Modular Sensors

Gas Detection

Sarah Cuthbert
27 Oct 2025

The Crowcon DuoIQ: Dual Gas Detector with Modular Sensors

When it comes to gas detection, flexibility is key, from confined space monitoring to multiple sites on a rotation, your gas detection requirements can quickly shift, and that’s precisely why the Crowcon team engineered the DuoIQ: a robust, two-channel gas monitor that’s small in size, intelligent in capabilities, and optimised for life in the field. As part of their brand new IQ range, the Crowcon DuoIQ two-sensor gas monitor enables users with the flexibility to detect two different gases with a single device – with modular trays, industry-leading battery life, and seamless connectivity via Crowcon Connect and the IQ Hub – making it the perfect upgrade to a more intelligent technology in a multi-monitor system.

What Is the Crowcon DuoIQ?

The Crowcon DuoIQ is a dual gas sensor device that combines flexibility and simplicity in a rugged, easy-to-use platform. It builds on the same IQ-range DNA as the UnoIQ - including: swappable, pre-calibrated sensor trays, up to 120-day battery life, one-button operation, and seamless Crowcon Connect and IQ Hub integration. But the real game-changer? DuoIQ’s ability to house and monitor two gas sensors in a single compact device offers expanded protection without additional weight, complexity, or cost.

Key Benefits of the Crowcon DuoIQ Dual Gas Detector

Dual Gas Monitoring: Monitor two hazards with one device, ideal for teams working across multiple gas zones or evolving risks.
Modular Sensor System: Swap sensors as needed without recalibration downtime. The same pre-calibrated sensor trays used in UnoIQ work with DuoIQ too.
120-Day Battery Life: No more mid-shift charging - DuoIQ is designed to run for up to 120 days on a single charge (depending on sensor configuration).
Rugged & Field-Ready: IP66/IP68 rated, drop-tested, and compact enough for all-day wear, but tough enough for heavy industry.
IQ Hub Integration: Enables automated bump tests, calibrations, and compliance reporting in under 30 seconds.
Crowcon Connect Compatibility: Sync wirelessly via Bluetooth® or NFC for real-time insights, fleet-wide tracking, and audit-ready data.

From UnoIQ to DuoIQ: One Platform, with Flexible Configurations

One of the biggest benefits of the IQ series is the ability for your team to have single gas detection with the flexibility to upgrade to dual detection later. With the UnoIQ/DuoIQ base unit, you can load in either a single UnoIQ sensor or dual DuoIQ sensors - with no recalibration or service required. With an identical durable housing, 120-day reusable battery, interchangeable, pre-calibrated trays and seamless integration with the IQ Hub, it really is one of the most flexible gas detectors on the market.

The Crowcon DuoIQ is available in the following dual configurations: CO/H2S, CO/02, H2S/O2, CH4/O2, NO2/CO, and more. Unique sensor combinations can be created from the following gases: Ammonia, Butane, Carbon Dioxide, Carbon Monoxide, Hydrogen Sulphide, Methane, Oxygen, and Sulfur Dioxide - with more coming soon.

Frontline Safety can equip your team with a fully adaptable, future-proof fleet of Crowcon IQ gas detectors—whether you're starting with the UnoIQ or scaling up with DuoIQ. Our expert support ensures you get the right configuration for your operational needs, with seamless integration across devices and platforms. As your detection requirements evolve, your fleet can evolve with them - without costly overhauls or retraining. With Frontline Safety, you're not just investing in equipment; you're investing in long-term protection, flexibility, and peace of mind.

While UnoIQ and DuoIQ offer powerful personal protection for individuals, the IQ range goes one step further, with a solution designed to protect teams, zones, and entire sites.

In our next post, we'll explore the DetectiveIQ - Crowcon's new portable area gas detector that brings rugged performance, wireless integration, and team-wide safety to any worksite, anywhere. Stay tuned to see how the IQ ecosystem scales from personal to perimeter, giving safety teams total coverage without the complexity.