Industrial-Grade Portable Multi-Gas Detector: High Accuracy via Infrared/Catalytic Sensors, Smart Alarm & Safety Certifications

Brand Name:GZAIR
Certification:CE
Model Number:M203 4 Gas
Minimum Order Quantity:10
Delivery Time:5-8 work days
Payment Terms:D/A,D/P,T/T,Western Union,MoneyGram
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Location: Guangzhou China
Address: Building I, Ruizhi Park, No.75, Baishashui Road, Tianhe District, Guangzhou, China
Supplier`s last login times: within 41 hours
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Product Details

Industrial-Grade 4-Gas Detector for Confined Spaces and High-Risk Areas

Protect your team with the Industrial-Grade 4-Gas Detector, specifically designed for confined spaces and high-risk industrial environments. This rugged, portable detector simultaneously monitors four critical gases—Oxygen (O₂), Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), and Combustible Gases (LEL)—ensuring comprehensive safety in real time.
Engineered with precision sensors and a durable, shock-resistant housing, this device delivers fast, accurate readings in challenging conditions such as tunnels, tanks, silos, wastewater plants, and oil & gas facilities. The bright digital display and intuitive interface make it easy to operate, even while wearing protective gear.
With high-decibel audible alarms, flashing LEDs, and vibration alerts, the detector ensures that workers are immediately notified of dangerous gas levels. The unit is IP-rated for water and dust resistance, and includes a long-lasting rechargeable battery to support extended field use.
Key Features:
Simultaneous detection of O₂, CO, H₂S, and LEL gases
Real-time monitoring with high-accuracy sensors
Triple alert system: audible, visual, and vibration
Compact, lightweight, and intrinsically safe design
Rechargeable battery with long operational runtime
Data logging and optional wireless communication (Bluetooth/WiFi/LoRa)
Ideal for confined spaces, industrial plants, emergency response, and hazmat teams
Ensure safety and compliance with this essential gas detection solution for high-risk work zones.




Portable Multi Gas Detector
• Intrinsically safe, CE certified
• Portable, industrial use, higher accuracy, sensitivity and accuracy
• Imported high quality sensors
• Detecting multi gas concentrations simultaneously
• Fully configurable alarm points
• Customized gas combination, private label & logo




Product ModelM203 portable multi gas detector
Sensor typeInfrared, catalytic,electrochemical
Size & Weight130*66*30mm / 300g
BatteryRechargeable lithium
AlarmsLED alarm @≥20cm
Buzzer alarm ≥95dB @30cm
Low power alarm
ChargingBy AC adapter or 5V USB port
DisplayColor LCD / OLCD
LCD readingReal-time concentration, battery indicator, time
BacklightAlways ON
Data logging (optional)Continuously data logging (1900 data at 0.1-10 configurable interval)
Charging time4-5 hours
Continuous working time> 12h
Working Temperature25℃ ~ +55℃, short time: -40℃ ~ +55℃
Sensor lifetimeinfrared: ≥5years;
Electrochemical: ≥2 years
Catalytic: ≥1 year
Ex proof signExib I
SamplingNatural diffusion
IP detreeIP54
ApprovalEx,MA,CMC,CE
Standard accessoriesUSB extension cord, charging adapter, calibration cap, calibration hose, stainless steel clip, hanging cord, leather case, manual
Optional accessoriesGas sampling pump, professional suitcase


China Industrial-Grade Portable Multi-Gas Detector: High Accuracy via Infrared/Catalytic Sensors, Smart Alarm & Safety Certifications supplier

Industrial-Grade Portable Multi-Gas Detector: High Accuracy via Infrared/Catalytic Sensors, Smart Alarm & Safety Certifications

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