(SignalFire: Marlborough, MA) -- SignalFire has released its 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 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.

Precalibrated 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 (H_₂S) concentrations from 0 to 100 ppm. Future versions will support additional gases, including carbon monoxide (CO), carbon dioxide (CO_₂), 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.

Key features

• Integrated smart gas sensor with internal diagnostics and stored calibration data 
• Local LCD with visual indication of gas level, sensor status, and remaining sensor life
• Integrated keypad for zero and span calibration, bump testing, and alarm checks—no laptop or handheld required
• 900 MHz license-free ISM band radio with 0.5 mile (800 meters) line-of-sight range 
• Continuous or scheduled (emissions) measurement modes with fast sensor sampling
• Reports gas concentration plus sensor health and fault conditions to the supervisory system
• Long-life 72 A/h Class I, Division 1 battery pack, field-replaceable
• IP65 industrial polycarbonate housing with integrated, protected antenna
• Class I, Division 1 (pending), Groups C, D, T4

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

SignalFire general manager Josh Schadel says, “The AirQ Scout-LCD is a direct response to what our customers have been asking for—greater visibility and simpler operation in the field. 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.”

Learn more about the AirQ Scout-LCD here.