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MSA ALTAIR 4XR Multigas Detector

by MSA Safety

Last updated Mar 29, 2026 · 2 revisions

Rugged 4-gas personal monitor detecting LEL, O2, CO, and H2S with XCell rapid-response sensors, IP68 rating, and 4-year warranty.

7.1 - Excellent
Quote Only · $1,387/mo Mobile App 3 Features
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About This Product

The MSA ALTAIR 4XR is a rugged multi-gas detector simultaneously monitoring LEL (combustibles), O2, CO, and H2S with rapid-response XCell sensors. It operates from -40F to +140F, survives drops from 25 feet onto concrete, and carries IP68 waterproof rating (2m for 60 minutes). Essential for HVAC technicians entering confined spaces, mechanical rooms, and boiler plants where combustible gas accumulation or oxygen depletion may occur. Backed by MSA's 4-year factory warranty.

FSH Score Breakdown

Ease of Use
8.0
Features
8.0
Support
8.0
Value
7.0
Integrations
6.0
AI Capabilities
2.5

Customer Reviews

Features

3 features confirmed across 3categories· Showing confirmed capabilities only

Customer Communication1feature

NotificationsEnd-of-sensor warning

Equipment & Asset Management1feature

Energy Management SystemReduced Gas Consumption Calibration

Compliance & Safety1feature

NIST Calibration TrackingScheduled Bump and Calibrate

Pricing

Model
Quote Only
Starting at
$1,387/mo
Notes
MSA ALTAIR 4XR (P/N 10178557) ~$1,386.99 at GME Supply. Simultaneously detects 4 gases: LEL, O2, CO, H2S using rapid-response XCell sensors. Li-polymer rechargeable battery with 24-hour runtime. IP68 waterproof (6ft/1hr), drop-tested 25ft onto concrete. Operating temp -40F to 140F. Size: 4.4"x3.0"x1.4", Weight: 8oz. 4-year warranty. HVAC use: confined space entry for boiler rooms, mechanical rooms, combustion safety. Bluetooth via ALTAIR Connect for detector updates, calibration emails, compliance reminders, and live readings.
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