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O2-a2 Sensor

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for H2s, Co, Lel, and O2, Triple Alarm Modes (Visual, Vibration, Sound) Multi Gas Detector

for H2s, Co, Lel, and O2, Triple Alarm Modes (Visual, Vibration, Sound) Multi Gas Detector

US $ 45-55 / Piece FOB
1 Piece (MOQ)
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Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Hanwei Portable 4-in-1 Multi Gas Leak Detector Monitor H2s O2 Co Ex Rechargeable Gas Analyzer Support Bluetooth/4G Networking

Hanwei Portable 4-in-1 Multi Gas Leak Detector Monitor H2s O2 Co Ex Rechargeable Gas Analyzer Support Bluetooth/4G Networking

US $ 240 / Piece FOB
5 Pieces (MOQ)
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HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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4-20mA DC /24V DC Output RS485 Modbus Output Reliable Zirconia Analyzer for Boiler Applications, 220VAC Voltage

4-20mA DC /24V DC Output RS485 Modbus Output Reliable Zirconia Analyzer for Boiler Applications, 220VAC Voltage

US $ 520-680 / Piece FOB
1 Piece (MOQ)
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Wuxi Yongan Electronic Technology Co., Ltd.

Jiangsu, China Since 2026
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Innovative Gas Detector with Fast Response Time for Hazardous Gases

Innovative Gas Detector with Fast Response Time for Hazardous Gases

US $ 1,190-4,600 / Set FOB
1 Set (MOQ)
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Beijing LSJ Technology Development Co., Ltd.

Manufacturer/Factory & Trading Company

Beijing, China Since 2026
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Safety Monitoring Kp830 Co Pid No2 No Pumo-Suction Portable Multi-Gas Detector

Safety Monitoring Kp830 Co Pid No2 No Pumo-Suction Portable Multi-Gas Detector

US $ 180-460 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Sewerin Pm 580 — Portable Gas Leak & Concentration Measuring Device

Sewerin Pm 580 — Portable Gas Leak & Concentration Measuring Device

US $ 4,110 / Piece FOB
1 Piece (MOQ)
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BEIJING GUOSENF INSTRUMENT CO.,LTD

Manufacturer/Factory & Trading Company

Beijing, China Since 2026
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Steelworks, Sewage Treatment Plant Usage Portable Multi Gas Detector Co/Nh3/H2s/O2/CH4

Steelworks, Sewage Treatment Plant Usage Portable Multi Gas Detector Co/Nh3/H2s/O2/CH4

US $ 1,000-1,100 / Piece FOB
5 Pieces (MOQ)
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HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Portable 3 Gas Detector with Built-in Pump (CO, O2, EX)

Portable 3 Gas Detector with Built-in Pump (CO, O2, EX)

US $ 399.35-499.28 / Piece FOB
1 Piece (MOQ)
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SHENZHEN KORNO I AND E CO., LTD

Guangdong, China Since 2017
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Confined Space Gas Detector Price Multi Gas Meter with Pump 4 Gas Monitor Lel O2 H2s Co Multi Gas Tester

Confined Space Gas Detector Price Multi Gas Meter with Pump 4 Gas Monitor Lel O2 H2s Co Multi Gas Tester

US $ 220-285 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Nitrogen Generator 99.999 Percent N2 for PCB Reflow Soldering

Nitrogen Generator 99.999 Percent N2 for PCB Reflow Soldering

US $ 10,000-100,000 / Piece FOB
1 Piece (MOQ)
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Zhejiang KSTK Manufacturing Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2017
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IP66, Water-Proof, Coal Mine Gas Detector, Portable Multi 4 Gas Detector with Built-in Pump

IP66, Water-Proof, Coal Mine Gas Detector, Portable Multi 4 Gas Detector with Built-in Pump

US $ 340-370 / Piece FOB
2 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Rechargeable LPG CO2 Co Detector with Vibration, Visual & Audible Alarms Pump Portable Gas Detector

Rechargeable LPG CO2 Co Detector with Vibration, Visual & Audible Alarms Pump Portable Gas Detector

US $ 460-500 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Atmospheric Pressure Industrial Boiler Kiln Heating Furnace Zirconia Analyzer for Efficient Boiler Operation, 220VAC Powered

Atmospheric Pressure Industrial Boiler Kiln Heating Furnace Zirconia Analyzer for Efficient Boiler Operation, 220VAC Powered

US $ 520-680 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Wuxi Yongan Electronic Technology Co., Ltd.

Jiangsu, China Since 2026
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Hydrogen Cyanide Hcn Fixed Gas Detector with Alarm Measure Range 0-100ppm

Hydrogen Cyanide Hcn Fixed Gas Detector with Alarm Measure Range 0-100ppm

US $ 90-115 / Piece FOB
2 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Portable Co Monitor Gas Detector 4 Gas Lel Gas Detector

Portable Co Monitor Gas Detector 4 Gas Lel Gas Detector

US $ 96-120 / Set FOB
1 Set (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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High Precision Industrial Explosion Proof H2s Biogas Gas Analyzer Detector Multitec 545

High Precision Industrial Explosion Proof H2s Biogas Gas Analyzer Detector Multitec 545

US $ 6,000-10,000 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
BEIJING GUOSENF INSTRUMENT CO.,LTD

Manufacturer/Factory & Trading Company

Beijing, China Since 2026
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Handheld IP66 4-in-1 Multi Gas Detector with Built-in Pump (E4000)

Handheld IP66 4-in-1 Multi Gas Detector with Built-in Pump (E4000)

US $ 340-370 / Piece FOB
2 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Environmental Rechargeable Pid LPG H2s Oxygen Pump-Suction 4-in-1 Gas Detector

Environmental Rechargeable Pid LPG H2s Oxygen Pump-Suction 4-in-1 Gas Detector

US $ 460-500 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Ce Approved Monitoring System H2 Gas Detector

Ce Approved Monitoring System H2 Gas Detector

US $ 360.45-880.05 / Piece FOB
1 Piece (MOQ)
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SHENZHEN KORNO I AND E CO., LTD

Guangdong, China Since 2017
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Portable Multi Gas Detector for Mine, Diffusion 4 Gas Detector for Lel, Co, O2, H2s

Portable Multi Gas Detector for Mine, Diffusion 4 Gas Detector for Lel, Co, O2, H2s

US $ 220-240 / Piece FOB
2 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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ABS Dnv CCS ATEX Marine Gas Detector Portable Pump 5 in 1 Co H2s O2 Lel CO2 Gas Detection Systems for Ballast Tank

ABS Dnv CCS ATEX Marine Gas Detector Portable Pump 5 in 1 Co H2s O2 Lel CO2 Gas Detection Systems for Ballast Tank

US $ 220-285 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Nitrogen Purifier with Stable N2 Output for Heat Treatment Atmosphere Control

Nitrogen Purifier with Stable N2 Output for Heat Treatment Atmosphere Control

US $ 10,000-100,000 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Zhejiang KSTK Manufacturing Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2017
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Explosion-Proof Wall Mounted Multi Gas Detector

Explosion-Proof Wall Mounted Multi Gas Detector

US $ 749.33-3,250.5 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
SHENZHEN KORNO I AND E CO., LTD

Guangdong, China Since 2017
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About O2-a2 Sensor FAQ

  • QHow often should I calibrate my gas analyzer?

    The O2-a2 Sensor is a key item within our extensive Gas Analyzer selection.Calibration frequency for gas analyzers typically depends on usage. Generally, it's recommended to calibrate every 6 months for consistent accuracy. For insight into cost-saving strategies, consider OEM options offered by distributors that provide calibration services at competitive prices. This proactive approach ensures compliance and precision in your measurement processes.

  • QAre there cheap options for reliable gas analyzers?

    The O2-a2 Sensor is included in our comprehensive Gas Analyzer range.Yes, there are affordable gas analyzers available that maintain quality. Explore factory-direct solutions that offer budget-friendly pricing without compromising on features. As a buyer, keep in mind that while cheaper might be desirable, ensuring accuracy and consistency in gas detection is key to avoid mistakes during measurements.

  • QWhat features should I look for in a gas analyzer?

    The O2-a2 Sensor is classified under our comprehensive Gas Analyzer range.When searching for a gas analyzer, consider features like multi-gas detection capabilities, calibration ease, and data logging capabilities. Look for OEM options that provide good pricing in wholesale quantities. Popular trends show that real-time monitoring and portability are in high demand, beneficial for various industries requiring reliable measurements.

Advanced Multi-Gas Monitoring Device with LCD Display

Advanced Multi-Gas Monitoring Device with LCD Display

US $ 1,190-4,600 / Set FOB
1 Set (MOQ)
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Audited Supplier
Beijing LSJ Technology Development Co., Ltd.

Manufacturer/Factory & Trading Company

Beijing, China Since 2026
Chat Now Send Inquiry
Portable 5 in 1 Gas Detector Supports Bluetooth or 4G Wireless Functions

Portable 5 in 1 Gas Detector Supports Bluetooth or 4G Wireless Functions

US $ 240 / Piece FOB
5 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
Chat Now Send Inquiry
Waterproof Pump Detector CH4 O2 Co H2s O3 Nh3 Pump Multi-Gas Analyzer

Waterproof Pump Detector CH4 O2 Co H2s O3 Nh3 Pump Multi-Gas Analyzer

US $ 180-460 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
Chat Now Send Inquiry
IP67 Level 4 Gas Personal Monitor Multi Gas H2s Co O2 Toxic Hanwei 4 Gas Detector

IP67 Level 4 Gas Personal Monitor Multi Gas H2s Co O2 Toxic Hanwei 4 Gas Detector

US $ 240 / Piece FOB
5 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Anesthesiology Department Anesthesia Machine

Anesthesiology Department Anesthesia Machine

US $ 500-2,800 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
GUANGDONG HONGYANG MEDICAL EQUIPMENT LIMITED

Guangdong, China Since 2021
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Marine Carbon Monoxide Detector Gas Alert Confined Space Gas Meter Combustion Gas Tester

Marine Carbon Monoxide Detector Gas Alert Confined Space Gas Meter Combustion Gas Tester

US $ 96-120 / Set FOB
1 Set (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
Chat Now Send Inquiry
Hanwei Portable 4-in-1 Multi Gas Leak Detector Monitor H2s O2 Co Ex (LEL) Rechargeable Gas Analyzer Support Bluetooth / 4G Networking

Hanwei Portable 4-in-1 Multi Gas Leak Detector Monitor H2s O2 Co Ex (LEL) Rechargeable Gas Analyzer Support Bluetooth / 4G Networking

US $ 240 / Piece FOB
5 Pieces (MOQ)
Send Inquiry
Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
Chat Now Send Inquiry
Premium Multirae O2 Sensor Detector 5 Gas Meter Industrial Detector

Premium Multirae O2 Sensor Detector 5 Gas Meter Industrial Detector

US $ 220-285 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
Chat Now Send Inquiry
Nitrogen Purification System 99.9999 Percent for Pharmaceutical Process Protection

Nitrogen Purification System 99.9999 Percent for Pharmaceutical Process Protection

US $ 10,000-100,000 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Zhejiang KSTK Manufacturing Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2017
Chat Now Send Inquiry
Air Quality Monitor Smart Multifunctiona Gas Detection Environmental Monitoring System

Air Quality Monitor Smart Multifunctiona Gas Detection Environmental Monitoring System

US $ 669-689 / pieces FOB
1 pieces (MOQ)
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Audited Supplier
Henan Fosen Electronics Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Personal Landfill Methane Ozone Ammonia Gas Detector Gas Measuring Monitoring System in Confined Space

Personal Landfill Methane Ozone Ammonia Gas Detector Gas Measuring Monitoring System in Confined Space

US $ 1,000-1,100 / Piece FOB
5 Pieces (MOQ)
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Audited Supplier
HANWEI ELECTRONICS GROUP CORPORATION

Manufacturer/Factory & Trading Company

Henan, China Since 2018
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Dust Monitor Wireless Air Quality Monitor Real-Time Air Pollution Detector

Dust Monitor Wireless Air Quality Monitor Real-Time Air Pollution Detector

US $ 669-689 / pieces FOB
1 pieces (MOQ)
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Audited Supplier
Henan Fosen Electronics Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Henan, China Since 2025
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Handheld Multi 3 in 1 Gas Detector O2 Co H2s Qrae 3 4 Gas Monitor Portable Multi Gas Detector Price

Handheld Multi 3 in 1 Gas Detector O2 Co H2s Qrae 3 4 Gas Monitor Portable Multi Gas Detector Price

US $ 220-285 / Piece FOB
1 Piece (MOQ)
Send Inquiry
Audited Supplier
Henan Zhong An Electronic Detection Technology CO.,LTD

Manufacturer/Factory & Trading Company

Henan, China Since 2025
Chat Now Send Inquiry
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