The ALTAIR® 4XR Multigas Detector from MSA offers advanced real-time gas detection in a compact and rugged design. Built to withstand the harshest environments, this portable monitor simultaneously detects up to four gases—combustible gases, oxygen, carbon monoxide, and hydrogen sulfide. Featuring cutting-edge MSA XCell® sensors, this detector delivers fast response times and high stability for greater worker protection. The integrated Bluetooth® capability enables wireless data transmission and remote safety alerts, enhancing worksite awareness and compliance. Engineered for durability with IP68 ingress protection, the ALTAIR 4XR is a trusted safety solution for professionals across construction, oil & gas, utilities, and emergency response sectors.

Key Features

Four-Gas Detection Capability: Monitors O₂, CO, H₂S, and combustible gases simultaneously.

Rapid Sensor Response: MSA XCell® sensors deliver typical T90 response in ≤15 seconds for quick hazard awareness.

Bluetooth® Wireless Connectivity: Enables real-time remote alarm notifications and device pairing with MSA ALTAIR Connect App.

IP68 Protection Rating: Waterproof and dust-tight—survives 2-meter submersion for up to 45 minutes.

Durable Construction: Drop-tested from 7.5 m (25 ft) and built for high-impact job sites.

Real-Time Event Notification: Sends alerts via text when paired with a smartphone for faster emergency response.

MotionAlert™ & InstantAlert™ Functions: Detect lack of movement and allow manual alarm triggering to signal distress.

Visual, Audible & Vibrating Alarms: Ensures alerts are received in loud or low-visibility environments.

Bump and Calibration Status LEDs: Green/red bump LED flashes to show compliance status for 24 hours post-bump test.

Long Battery Life: Up to 20 hours runtime (Bluetooth off), with ≤4-hour full recharge cycle.

Intended Use

Ideal for workers in confined spaces, maintenance teams, industrial hygiene, or emergency response, this portable gas detector is a dependable solution for detecting life-threatening atmospheres. It’s designed for real-time exposure tracking and meets the safety needs of professionals in construction, utilities, oil & gas, manufacturing, and chemical processing.

Product Specifications

Part Number: 10178557
Gases Detected: O₂, CO, H₂S, Combustible Gases (%LEL or CH₄)
Sensor Type: MSA XCell® sensors (electrochemical for toxic gases and oxygen, catalytic for combustible gases)
Battery: Rechargeable Li-Polymer
Run Time: Up to 20 hours (Bluetooth OFF)
Charging Time: ≤4 hours
Display: High-contrast LCD with backlight
Audible Alarm: 95 dB @ 30 cm
Visual Alarm: 4 bright LEDs
Vibrating Alarm: Integrated
Bluetooth: Yes (on models manufactured before July 2022)
Ingress Protection: IP68 (submersible up to 2 m for 45 min)
Operating Temperature: -40 to +60 °C (extended); -10 to 40 °C (normal)
Humidity Range: 15%–90% RH (non-condensing)
Weight: 224 g (7.9 oz.)
Dimensions: 112 x 76 x 33 mm (4.4" x 3.0" x 1.3")

Certifications and Standards

ATEX / IECEx Certified
CSA / UL / MSHA Approved
EN 60079-29-1 / EN 45544 Compliant
ANSI/ISA-92.0.01 and CSA 22.2