Building on years of sensor design experience, MSA is revolutionising sensor technology with breakthroughs in design that improve performance.

With reliable, extended-life XCell Sensors, there’s no need to replace sensors after two years.



  • Sensor response and clear times under 15 seconds 

  • Bump test under 15 seconds 

  • Span calibration time under 60 seconds 

  • Greater signal stability and repeatability under changing or extreme environmental conditions 

  • Two-tox CO/H2S sensor with virtually no cross-channel interference 

  • The digital output of the sensors makes them much less susceptible to RF interference
  • Typical life greater than four year
  • Laser-welded sensor housings eliminate opportunities for leaks
  • Proprietary operating mode of the combustible sensor helps it stand up to poisons over the life of the sensor
  • End-of-sensor-life indicator gives advanced warning to the user, eliminating service outages
  • Large buttons and a bright display enable quick and easy operation even while wearing gloves 

  • If a user becomes disabled due to unforeseen hazards, the Motion Alert sensor will activate after 30 seconds 

  • The Instant Alert feature enables users to manually alert others of a dangerous situation with the push of a button 

  • Compatible with GALAXY Test System and ALTAIR4 Quick Check Station 

  • MSA Link Software-ready 

  • Global approvals for worldwide acceptance

Technical Specications

Drop test : 6m

Housing : 
Rugged rubberised armour

Weight : 222 g

Dimensions (H x W x D) : 112 x 76 x 35 mm

Audible alarm :  >95 dB at 30 cm

Visual alarm : 4 ultra-bright LEDs on top and bottom

Vibrating alarm :  Standard

MotionAlert & InstantAlert :  Standard 

Display : High-contrast LCD

Backlight : Adjustable time-out 

Battery : Rechargeable li-polymer

Run time : 24 hour @
room temperature

Charging time : < 4 hrs

Operating temperature range : –20°C to +50°C

Short period operation : –40°C to +60°C

Humidity : 15–90% RH non-condensing

Ingress protection : IP 67

Data log : Standard, 50 hours minimum

Event log :Standard 500 events

Standard warranty : 3 years

Extended warranty : Optional 1 year 


II 1G Ex ia IICT4, –40°C to +60°C, IP67
(Zone 0 with no combustible sensor installed) II 2G Ex ia d IIC T4, –40 °C to +60°C, IP 67 (Zone 1 with combustible sensor installed)

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