T40 Rattler ATEX single gas detector (CO, H2S or O2)

Starting at $206.14

The T40 Rattler is an ATEX single gas detector with electro-chemical sensor dedicated to the detection of carbon monoxide (CO), hydrogen sulfide (H2S) or oxygen (O2). Equipped with a large LCD screen for permanent display of the measurement and setting of thresholds, this very economical device is guaranteed for 3 years.

With an excellent quality/price ratio, small, light and particularly robust, it is waterproof and dustproof with an IP68 protection class. With a very fast response time (T90 < 10 seconds) and its long-life lithium battery, this portable gas detector combines  performance and safety. Detailed description

Specification sheet T40
Specification sheet T40
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Robust, light and appreciated for its simplicity of use, the T40 Rattler gas detector is very popular with coastal collectivities (H2S detection), the medical field (emergency services) and sectors of activity where a risk of nitrogen leak could generate a decrease in the oxygen level in the ambient air.

In the presence of a hazardous gas concentration, the T40 Rattler activates an audible, visual and vibratory alarm. The 95dB audible signal alerts the wearer even in very noisy environments. A large text-free display clearly shows the gas concentration and the 2-button navigation allows the alarm thresholds to be set. Thanks to the powerful backlighting, all indications are clearly readable in the dark.

Main assets:

  • Very compact, light and robust device
  • Sensors and electronics guaranteed for 3 years
  • Sound (95 dB), light and vibration alarm
  • 2 alarm levels (low and high)
  • Long life lithium battery (more than 2 years without alarm)
  • ATEX, IECEx, UL, CSA certification and IP68 protection class
  • Excellent quality / price ratio

Technical specifications

Gas sensor: electrochemical sensor, CO, H2S or O2 detection
Measurement scale: 

  • O2: 0-30%/vol. in 0.1%/vol. increments
  • CO: 0-1000 ppm in 1% increments 
  • H2S: 0-500 ppm in 1 % increments 

Response time: T90 ≤ 10 seconds
Self-test: Automatic
Display: backlit LCD screen

  • 2 adjustable alarm thresholds (low and high alarm)
  • TWA and OEL alarm (optional)
  • Memorization of the maximum measured value 
  • Alarm indication: audible 95 dB, luminous and vibrating 
  • Recording of data and alarm events

Battery: Lithium 3.6 V replaceable
Housing: Polycarbonate with a rubber overmold
Protection class: IP68 (waterproof and dustproof)
Dimension: 86 x 58 x 19 mm 
Weight: 98 grams 
Operating conditions:

  • Temperature: -40 to +50°C
  • Humidity: 5 to 95% RH (non-condensing)


  • ATEX: Ex ia IIC T4 Ga; Ex ia I Ma
  • IECEx: Ex ia IIC T4 Ga; Ex ia I Ma 
  • UL: Class I, Division 1, Groups A, B, C, D  T4 Class I, Zone 0, AEx ia IIC T4 Ga
  • CSA: Ex ia IIC T4 Class I, Division 1, Groups A, B, C, D T4
  • CE: Directive 2014/30/EU, EN50270, Directive 2011/65/EU and 2015/863/EU
More Information
Manufacturer Industrial Scientific

Worldwide delivery

International delivery in compliance with international transport regulations (IATA, AMDG, ARD).

On demand "lithium" and "dangerous goods" regulated packaging.

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