SignalFire launches AirQ Scout-LCD: The future of wireless gas emissions monitoring

SignalFire continues to demonstrate its commitment to customer-driven innovation with the release of the new AirQ Scout-LCD 900 MHz wireless gas detection system.

Following the successful launch of the AirQ Scout in June 2025, customers requested a solution with local indication and visual alarming. SignalFire’s response is the all-new AirQ Scout-LCD, delivering powerful wireless gas monitoring with an integrated LCD display for real-time visibility in the field.

Designed for seamless integration with SignalFire’s 900 MHz gateways, the AirQ Scout-LCD features an advanced smart sensor that stores critical diagnostics directly on the sensor, including remaining life, calibration history, and serial number—all accessible via the built-in LCD.

Pre-calibrated replacement sensors eliminate the need for field calibration, reducing maintenance time. By enabling real-time visibility into sensor health, the system supports more efficient, predictive maintenance and lowers overall operating costs.

The initial release of the AirQ Scout-LCD is designed to monitor hydrogen sulfide (H₂S) concentrations from 0 to 100 ppm. Future versions will support additional gases, including carbon monoxide (CO), carbon dioxide (CO₂), and lower explosive limit (LEL) measurements for various combustible gases.

With a wireless range of up to 0.5 miles (800 meters), the AirQ Scout-LCD enables gas detection in remote or hard-to-reach locations without the need for trenching or wiring. Its battery-powered design eliminates the need for external power supplies. For extended coverage, repeater nodes can be deployed to create a robust wireless mesh network.

When paired with the PATRIoT Gateway, multiple gas readings can be seamlessly integrated into existing control systems using Modbus RTU, Modbus TCP/IP, MQTT/Sparkplug, or EtherNet/IP. Users can also remotely monitor data through SignalFire Cloud, enabling real-time visibility, alarming, and reporting.

Engineered for hazardous environments, the AirQ Scout-LCD is pending Class I, Division 1 intrinsically safe certification. Its wireless design eliminates the need for IS barriers or additional components, simplifying installation and reducing system cost.

The AirQ Scout-LCD features an integrated smart gas sensor with internal diagnostics and stored calibration data. A local LCD provides visual indication of gas levels, sensor status, and remaining sensor life. The integrated keypad allows users to perform zero and span calibration, bump testing, and alarm checks without requiring a laptop or handheld device. It operates on a 900 MHz license-free ISM band radio with a line-of-sight range of up to 0.5 miles (800 m). The device supports both continuous and scheduled emissions measurement modes with fast sensor sampling. It reports gas concentration, sensor health, and fault conditions directly to the supervisory system. Power is supplied by a long-life 72 A/h Class I, Division 1 battery pack that is field replaceable. The unit is housed in an IP65-rated industrial polycarbonate enclosure with an integrated protected antenna and is certified for Class I, Division 1 (pending), Groups C, D, T4 environments.

Looking ahead, SignalFire’s product development team continues to expand its gas sensing capabilities, with additional sensor options planned based on ongoing customer feedback.

“The AirQ Scout-LCD is a direct response to what our customers have been asking for - greater visibility and simpler operation in the field,” said Josh Schadel, SignalFire’s General Manager. “It integrates seamlessly with existing SignalFire gateways, making it easy to add gas detection points without costly wiring, while new sites can be quickly deployed and connected to SCADA and remote monitoring systems.”