Sometimes you need more than a single-gas detector, especially if you’re in an environment where there’s a risk of multi-gas exposure. GAOTek’s selection of multi-gas detectors can detect for example five separate gases, and are used in numerous commercial and industrial settings across the United States, Canada and internationally.


Locate any leak or exposure in a work environment across problematic gases like oxygen, hydrogen sulfide, carbon monoxide, or other combustible gases. You’ll be protecting your properties, assets, and workers from hazardous gases and vapors monitoring these gases and others. Available for mobile use, GAOTek multi-gas detectors are pre-calibrated, long-lasting, easy to use, and reliable in the field.


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ID: GT00Z200XB

This portable ‘Four Gas Detector with High Accuracy (Dust-Proof, Data Store)’ detects O2, LEL, CO, H2S and provides safety for staff working under the hazardous environment

ID: GT00Z200UT

ID: GT00Z200U4

ID: GT00Z200U5

GAOTek Nitric Oxide Gas Detector detects the presence of NO and measures concentrations between 1-250  with fast sampling, max hold and data hold.

ID: GT00Z200UU

ID: GT00Z200UB

ID: GT00Z200U7

ID: GT00Z200UP

ID: GT00Z200UN

ID: GT00Z200UR

ID: GT00Z200UD

ID: GT00Z200UG

ID: GT00Z200UO

ID: GT00Z200TH

ID: GT00Z200VT

ID: GT00Z200TJ

ID: GT00Z200TK

ID: GT00Z200TI

ID: GT00Z200VJ

ID: GT00Z200VS

ID: GT00Z200VU

ID: GT00Z200ZF

GAOTek Gas Detector for Multiple detects 4 gases such as O2, CO, H2S, LEL(EX)at the same time, provides sound, light and vibration alarm types.

ID: GT00Z200XC

GAO Tek Thermocouple Calibrator calibrates thermocouple measuring with optional temperature unit select.

ID: GT00Z200TE

GAO Tek Four-Gas Detector is used for field professionals to detect four gases H2S, CO, O2 and flammable gas and also records events.

ID: GT00Z200TD

GAO Tek Four-Gas Detector enables field professionals to detect four gases H2S, CO, O2 and flammable gas effectively with Audio-Video Alarm feature.  

ID: GT00Z200TC

GAO Tek Four-Gas Detector provides field professionals the ability to detect four gases H2S, CO, O2 and flammable gas with Peak reading feature.

ID: GT00Z200TB

GAO Tek Multifunction Gas Detector enables field professionals to detect five gases at a time and is customizable