Overview

Gas detectors are essential safety and monitoring devices that identify the presence and concentration of hazardous or combustible gases in industrial, commercial, and research environments. These instruments play a critical role in protecting workers, ensuring compliance with safety regulations, and preventing catastrophic accidents. Advanced gas detection systems offer real-time alerts, data logging, and integration with broader safety networks, giving organizations reliable tools to manage risk effectively. Headquartered in New York City and Toronto, Canada, GAO Tek Inc. is ranked among the world’s top 10 leading suppliers of advanced B2B technologies. Together with GAO Research Inc. and GAO RFID Inc., we form GAO Group, which for more than four decades has served Fortune 500 corporations, top research institutions, leading universities, and U.S. and Canadian government agencies. At GAO Tek, we provide robust gas detection solutions backed by strong R&D, strict quality assurance, and expert support onsite or remotely.

Below is a list of all GAO Tek’s Gas Detector products:

Hydrogen Gas Leakage Detector – GAOTek

SKU: GAOTek-HGD-117
Hydrogen Gas Leakage Detector detect H2 gas concentration in the air by pump suction. 

 GAOTek Portable 6 in 1 gas detector with pump – 6 Level Adjusted Pump

SKU: GAOTek-OOGD-123
Versatile 6-in-1 gas detector with pump. Waterproof, explosion-proof, and drop-proof. Large color screen, adjustable pump levels.

16-Channel Digital Gas Alarm Controller – GAOTek

SKU: GAOTek-CGD-806
Digital 16-channel gas alarm controller with color touch display, 4–20 mA and RS-485 communication, analog input support, and robust power backup. Designed for centralized monitoring across industrial gas safety systems.

2-in-1 HCHO & TVOC Air Pollution Detector with LCD & API Monitoring – GAOTek

SKU: GAOTek-FGD-121
Portable 2-in-1 meter for real-time monitoring of formaldehyde and TVOC with LCD display, API calculation, and alarm functions.

3 in 1 Gas Detector for Formaldehyde Ozone Fluorine Detection Alarm – GAO Tek

SKU: GAOTek-GD-001
GAO Tek 3-in-1 gas detector for fixed monitoring of formaldehyde, ozone, and fluorine with sound-light alarm and integration options.

3 in 1 Indoor Air Quality Monitor with CO2, Temperature Humidity – GAOTek

SKU: GAOTek-OCGD-172
3-in-1 indoor air quality monitor with CO2, temperature, and humidity, featuring LCD display and compact design for home, office, and lab monitoring.

3 in1 Hydrogen H2 Gas Dew Point Detector with 0-100% Range – GAOTek

SKU: GAOTek-HGD-191
3-in-1 hydrogen H2 gas and dew point detector. 0-100% H2 range, -60°C to 20°C dew point. For industrial safety and environmental monitoring.

3-In-1 Air Quality Detector–TVOC, HCHO CO₂ Monitoring Device – GAOTek

SKU: GAOTek-NGD-170
Compact 3-in-1 air quality detector for TVOC, HCHO & CO₂ with real-time monitoring, high sensitivity sensors, and lightweight portable design.

4 – in – 1 Portable Multi – Gas Detector with LCD and Rechargeable Battery – GAOTek

SKU: GAOTek-OGD-268
Reliable 4-in-1 gas detector for O₂, CO, H₂S & LEL. Compact, rechargeable, with LCD & alarms for industrial and confined space safety.

4 In 1 Gas Detector Analyzer with Specifically Methane-GAOTek

SKU: GAOTek-IMGD-277
The GAOTek 4 In 1 Gas Detector 4 Unity Gas Analyzer detects CO, H2S, O2, CH4, with a large LCD, IP65 protection, low battery reminder, and multiple alarms. 1-year warranty.

4 in 1 Portable Gas Detector – Flammable Gas Safety Device

SKU: GAOTek-OGD-267
Lightweight 4 in 1 gas detector with 3.7V lithium battery, ABS body, and real-time monitoring. Perfect for industrial, commercial & home safety.

4-in-1 Gas Detector w/ Vibration, Light Alarms, Pump – GAOTek

SKU: GAOTek-MGD-499
Portable 4-in-1 gas detector with pump, vibration & light alarms, rechargeable battery, data logging, IP66 rating for reliable and safe monitoring. 

5-in-1 Infrared Air Quality Detector with CO₂, TVOC, HCHO, Temp & Humidity – GAOTek

SKU: GAOTek-HFGD-171

Portable 5-in-1 infrared air quality detector measuring CO₂, TVOC, HCHO, temperature & humidity with real-time display and smart alarm system.

Adjustable Flow Gas Analyzer with Data Logging GPS Multi-Function – GAOTek

SKU: GAOTek-AGD-202
Portable multi-gas detector with adjustable pump, data storage, GPS, PM2.5/PM10 support, and long-life rechargeable battery.

Adjustable Flow Gas Analyzer with Data Logging GPS Multi-Function – GAOTek

SKU: GAOTek-AGD-231
Portable multi-gas detector with adjustable pump, data storage, GPS, PM2.5/PM10 support, and long-life rechargeable battery.

Advanced H2S Gas Detector with Multi Alarm and Data Logging-GAOTek

SKU: GAOTek-HSGD-189
Durable H2S gas detector with LCD display, multi-alarm modes, 1000 event logging, man-down alert, easy 3-button use, and auto zero calibration.

Advanced Infrared Gas Analyzer with Self-Priming Pump & Alarm – GAOTek

SKU: GAOTek-CMD-140
Overview GAOTek type pump suction gas analysis alarm using the built-in high-power carbon membrane self-priming pump infrared detection principle. The

Advanced Multi Parameter Industrial Gas Detection System – GAOTek

SKU: GAOTek-NGD-175
Reliable industrial gas detector with high-capacity storage, wide temperature range, and customizable accessory kits for precise monitoring.

Advanced Multi-Gas Air Quality Monitor with GPS & Smart Alerts – GAOTek

SKU: GAOTek-MGD-179
Portable intelligent air quality monitor with multi-gas detection, real-time data, GPS, SOS alarm, and a high-definition touch screen. ISO, CE, FCC, ATEX certified.

Advanced Multi-Gas Detector with IR Sensor & Data Logging- GAOTek

SKU: GAOTek-RAGD-233
Advanced multi-gas detector with IR sensor, IP67 protection, LCD display, data storage, and multiple wired/wireless outputs. 

Advanced Portable 4-in-1 Gas Detector with Pump Suction and Diffusion – GAOTek

SKU: GAOTek-AGD-217
Portable 4-in-1 gas detector with advanced sensors, pump suction, diffusion, and waterproof explosion-proof design for reliable industrial safety monitoring.  

Advanced Portable Single Gas Detector with High Accuracy and Stability – GAOTek

SKU: GAOTek-AGD-240
Portable single gas detector with high accuracy, quick response, and reliable performance for industrial gas monitoring and safety.

Advanced Pump Multi-Parameter Gas Detector with GPS & Data Logging – GAOTek

SKU: GAOTek-MGD-178
Overview GAOTek pump multi-parameter detector (hereinafter referred to as the detector) is an intelligent multi-parameter detector designed with advanced integrated

Advanced Pumped Laser Methane Detector with TDLAS Tech – GAOTek

SKU: GAOTek-MGD-274
Overview GAOTek advanced pumped laser methane detector with TDLAS technology, this product can solve the problems where the traditional detectors

GAO Tek’s products of Gas Detector are organized as follows:

Ammonia Gas Detectors

Ammonia gas detectors identify and measure ammonia leaks in refrigeration systems, agricultural facilities, and chemical plants. GAO Tek offers reliable detectors with high sensitivity and fast response times.

Applications include fertilizer production, cold storage facilities, and wastewater treatment plants.

Also known as NH₃ detectors or ammonia leak monitors.

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Carbon Dioxide Gas Detectors

Carbon dioxide gas detectors monitor CO₂ levels to prevent asphyxiation risks and ensure safe working conditions. GAO Tek’s detectors are engineered with advanced sensors and digital readouts for accurate monitoring.

They are used in breweries, greenhouses, laboratories, and confined spaces.

Also referred to as CO₂ monitors or carbon dioxide analyzers.

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Carbon Monoxide Gas Detectors

Carbon monoxide gas detectors measure toxic CO levels, offering early warnings in enclosed spaces. GAO Tek supplies detectors with audible alarms and wireless connectivity options.

Common in residential safety, industrial facilities, and parking garages.

Alternative names include CO detectors or carbon monoxide monitors.

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Combustible Gas Detectors

Combustible gas detectors sense explosive gases such as methane, propane, and butane. GAO Tek’s detectors feature catalytic or infrared sensors for accurate results.

Applications include oil and gas, mining, and chemical processing.

Also called LEL detectors, explosion hazard detectors, or flammable gas monitors.

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Formaldehyde Gas Detectors

Formaldehyde gas detectors are designed to measure airborne formaldehyde in industrial or laboratory settings. GAO Tek’s detectors provide real-time monitoring for health and safety.

They are used in furniture manufacturing, textiles, and laboratories.

Also known as HCHO detectors or formalin monitors.

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Hydrogen Bromide Gas Detectors

Hydrogen bromide detectors identify toxic concentrations in semiconductor manufacturing and chemical facilities. GAO Tek offers rugged and portable solutions.

Applications include specialty chemical production and industrial safety.

Alternative names include HBr detectors or hydrogen bromide monitors.

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Hydrogen Cyanide Gas Detectors

Hydrogen cyanide detectors monitor highly toxic gas levels in production and emergency response applications. GAO Tek’s detectors ensure rapid and reliable detection.

Used in electroplating, chemical plants, and emergency hazmat response.

Also called HCN monitors or cyanide gas detectors.

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Hydrogen Fluoride Gas Detectors

Hydrogen fluoride detectors measure HF gas, which is highly corrosive and toxic. GAO Tek provides detectors built to withstand harsh industrial environments.

They are applied in glass etching, semiconductor fabrication, and chemical plants.

Also known as HF monitors or hydrogen fluoride analyzers.

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Hydrogen Gas Detectors

Hydrogen gas detectors monitor hydrogen concentrations, especially in facilities where leaks pose explosion risks. GAO Tek delivers detectors with fast response times and robust safety features.

Applications include fuel cell technology, battery charging stations, and laboratories.

Also referred to as H₂ detectors or hydrogen leak monitors.

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Hydrogen Sulfide Gas Detectors

Hydrogen sulfide gas detectors detect toxic H₂S gas commonly found in oil and gas, sewage, and mining operations. GAO Tek offers rugged, portable, and fixed units.

Used in drilling sites, wastewater treatment, and confined space entry.

Alternative names include H₂S detectors or sour gas monitors.

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Methane Gas Detectors

Methane gas detectors identify leaks to prevent explosions and environmental hazards. GAO Tek’s detectors offer high accuracy with portable and stationary models.

Commonly used in natural gas facilities, landfills, and mining.

Also called CH₄ detectors or methane leak monitors.

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Nitric Oxide Gas Detectors

Nitric oxide detectors monitor NO gas levels, critical in medical and industrial applications. GAO Tek provides detectors with precise electrochemical sensors.

Applications include combustion analysis, hospitals, and environmental monitoring.

Also referred to as NO detectors or nitric oxide analyzers.

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Nitrogen Dioxide Gas Detectors

Nitrogen dioxide gas detectors measure NO₂ gas concentrations, ensuring safety in urban and industrial environments. GAO Tek’s detectors are built with robust sensors for long-term use.

They are applied in traffic monitoring, power plants, and chemical manufacturing.

Alternative names include NO₂ detectors or nitrogen dioxide analyzers.

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Oxygen Gas Detectors

Oxygen gas detectors monitor oxygen levels to prevent asphyxiation or combustion risks. GAO Tek offers portable and fixed detectors with long-life sensors.

They are critical in confined spaces, laboratories, and industrial safety systems.

Also referred to as O₂ monitors or oxygen deficiency detectors.

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Ozone Gas Detectors

Ozone gas detectors measure O₃ concentrations in air, ensuring workplace and environmental safety. GAO Tek provides portable detectors with fast, accurate readings.

Used in water treatment, food processing, and cleanroom monitoring.

Also known as O₃ detectors or ozone analyzers.

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Multi Gas Detectors

Multi gas detectors simultaneously monitor multiple gases, providing comprehensive safety coverage. GAO Tek offers configurable models that support different gas combinations.

They are used in confined space entry, firefighting, oil and gas, and industrial plants.

Also known as 4-gas detectors, multi-gas monitors, or portable gas analyzers.

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Other Gas Detectors

Other gas detectors include instruments for specialty gases or custom monitoring needs. GAO Tek offers tailored solutions to meet specific safety and research requirements.

These detectors are applied in laboratories, R&D, specialty manufacturing, and environmental monitoring.

Alternative names include specialty gas detectors or customized gas monitors.

Explore Other Gas Detectors

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Other Product Categories We Offer

GAO Tek Inc. provides these products and systems with robust R&D, ensuring reliability, scalability, and technical excellence to help industries achieve their goals.

Our products are in stock and can be shipped overnight to the Continental U.S. and Canada from one of our local warehouses. If you have any questions, our technical experts can help you. Please fill out this form or email us.