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GasWatch 3 Single Oxygen Gas Detector with wrist band

The GasWatch 3 Single Gas Detector is the world’s smallest and lightest single-gas monitor.


SKU 72-0012-01 Categories , Tag



The GasWatch 3 Single Oxygen Gas Detector is the world’s smallest and lightest single-gas monitor. Weighing just 1.6 ounces, its compact form affords great comfort and flexibility in how you choose to wear it. It can be worn on your wrist as a watch, or clipped into your breathing zone on your lapel, hard hat or other safety equipment with its alligator clip.

A small, field-replaceable, coin-type lithium-ion battery gives the GasWatch 3 over 4,000 hours of continuous operation.

The great battery life coupled with a 2-year warranty gives the GasWatch 3 tremendous value and a low cost of ownership.

Tags: O2 Oxygen Gas Detector, Single Gas Detector

Additional information

Weight .5 lbs


  • 2 year warranty for Oxygen
  • Up to 4,000 hours of operation
  • Light and compact “watch type” design
  • Comfortably wear in your breathing zone
  • Available with a watch band or alligator clip
  • Automatic backlight during alarm
  • Sturdy IP-66/68 rated design
  • Water, dust and radio frequency resistant
  • Non-compliance indicator


Sample Method Diffusion
Operating Time Oxygen: 4,000 hours
Alarm Gas Alarm: 1st, 2nd, 3rd (user adjustable), OVER alarm, STEL and TWA
Trouble Alarm: Sensor connection, low battery, circuit failure and calibration range error
Battery CR2450 coin-type lithium-ion battery
Display Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Alarm Flashing LEDs
Functions Datalogger, vibration, STEL alarm, TWA alarm, quick calibration, peak value display, temperature display
Enclosure IP-66 / 68
Temperature -20 to 50°C
Humidity 10% to 90% relative humidity (non-condensing)
Intrinsic Safety ATEX, IECEx, CSA
Size 2.5″ x 1.6″ x .86″
Weight 1.6 ounces
Warranty 2 Years for Oxygen sensors

Sensor Specifications

Oxygen (O2)  0 – 40% Vol 19.5 % Vol / 18.0% Vol


GasWatch 3 Oxygen Single Gas Monitor Datasheet

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