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| Categories | Multigas Detector |
|---|---|
| Brand Name: | GZAIR |
| Model Number: | M203 4 Gas |
| Certification: | CE |
| Place of Origin: | China |
| MOQ: | 10 |
| Price: | $29 - $169 |
| Payment Terms: | D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 10000 pieces per month |
| Delivery Time: | 5-8 work days |
| Packaging Details: | 48cm*44cm*39.5cm/carton |
| Product Model: | M203 portable multi gas detector |
| Sensor type: | Infrared, catalytic,electrochemical |
| Size & Weight: | 130*66*30mm / 300g |
| Battery: | Rechargeable lithium |
| Company Info. |
| Guangzhou GZAIR Instruments Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
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 Model | M203 portable multi gas detector |
| Sensor type | Infrared, catalytic,electrochemical |
| Size & Weight | 130*66*30mm / 300g |
| Battery | Rechargeable lithium |
| Alarms | LED alarm @≥20cm Buzzer alarm ≥95dB @30cm Low power alarm |
| Charging | By AC adapter or 5V USB port |
| Display | Color LCD / OLCD |
| LCD reading | Real-time concentration, battery indicator, time |
| Backlight | Always ON |
| Data logging (optional) | Continuously data logging (1900 data at 0.1-10 configurable interval) |
| Charging time | 4-5 hours |
| Continuous working time | > 12h |
| Working Temperature | 25℃ ~ +55℃, short time: -40℃ ~ +55℃ |
| Sensor lifetime | infrared: ≥5years; Electrochemical: ≥2 years Catalytic: ≥1 year |
| Ex proof sign | Exib I |
| Sampling | Natural diffusion |
| IP detree | IP54 |
| Approval | Ex,MA,CMC,CE |
| Standard accessories | USB extension cord, charging adapter, calibration cap, calibration hose, stainless steel clip, hanging cord, leather case, manual |
| Optional accessories | Gas sampling pump, professional suitcase |





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