Altair io 4

The MSA Altair io4 is a handheld, four‑gas detector that continuously monitors O₂, CO, H₂S and combustible gases, with built‑in Bluetooth and optional cloud connectivity for fleet‑wide monitoring. The supplied category identifies the equipment as Portable Multi-Gas Detector, and it is normally installed in the protected space, on the person, or at a fixed sensor point with signals returned to the relevant alarm or monitoring system. In that listed role, its primary purpose is to detect hazardous gas, oxygen condition, fire indication or another safety-related condition identified by the listed category. Fixed, portable, optical, heat, gas and oil-mist sensors use different principles, so calibration and functional testing must match the actual detector type. The model designation identifies the listed configuration, but no additional performance, approval or construction detail is inferred from the model code beyond the information supplied in the source record. The source metadata also states capacity: 4 gases. For exact ratings, dimensions, settings, capacities, materials and variant-specific limits, refer to the manufacturer documentation for the exact figure.