Support worker safety and connectivity with the ALTAIR io 4 portable gas detector.

The ALTAIR io 4 is a secure, smart gas detector with out-of-the-box connectivity packed into an ultra-rugged design - featuring our XCell sensor platform which continues to lead the industry in lifetime & durability. The ALTAIR io 4 was designed from the ground-up to work seamlessly with the MSA Grid and the ALTAIR io Dock, providing hassle-free compliance, effortless fleet management & incredible visibility into your worker safety.

  • Battery: 2 Ah Rechargeable
  • Charge Time: Typical full charge is 4.5 hours at room temperature
  • Exceeds 26 drops from 4 feet (1.2 m) (MIL-STD-810G 516.6 Transit Drop)
  • Capable of surviving an incidental 25 foot (7.5 m) drop onto concrete
  • Survives 60 minutes in NFPA 1982-2018 tumble tester
  • Dust and waterproof IP68 rating (2 m for 1 hour)


  • RFID Reader: Used by MSA id Tags for digital device assignment & DOCK communication
  • Cellular: LTE-M / 2G Fallback
  • Cellular Carriers: AT&T Global Partner Network, Verizon (USA Only)
  • Bluetooth: v4.1 Bluetooth Low-Energy (BLE)

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