【Good News】Strength Proven, Safety Recognized — Two CO Sensors Successfully Achieved UL Certification
We’re excited to share an important milestone: our ME2-CO-Φ14×5 and MEs-CO carbon monoxide sensors have passed UL’s rigorous testing and received UL certification certificates.
UL (Underwriters Laboratories) is widely recognized across the United States and North America as a trusted safety mark, with certification programs that evaluate products against applicable safety requirements.
For our customers, this certification represents something very practical: confidence in safety and reliability, plus stronger compliance readiness for products entering global markets.
Why UL Certification Matters for CO Detection Products
Carbon monoxide is a high-risk gas because it’s colorless and odorless, and detection devices must operate reliably across long life cycles and real-world environments. When a CO sensor is used in alarms, monitors, or safety controllers, the performance of the sensing element directly impacts:
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alarm credibility and repeatability
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long-term stability and maintenance cost
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product compliance workflows and market access
Achieving UL certification is an independent confirmation that our products meet strict evaluation requirements under relevant UL programs.
Two UL-Certified CO Sensors — Key Highlights
1) ME2-CO-Φ14×5: Robust performance for demanding operating conditions
ME2-CO-Φ14×5 is a fuel-cell (electrochemical) type CO sensor that outputs a current proportional to CO concentration (Faraday-law behavior), supporting reliable CO measurement for safety devices.
Typical reference specs (by page/version):
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CO range: commonly 0–1000 ppm
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High-range variant listing: 0–5000 ppm (max 10000 ppm)
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Response time: <30 s
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Operating temperature: -20°C to 80°C
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Typical life: 10 years
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Applications: commercial, vehicle, small generator and other CO monitoring scenarios
Note: Different listings may reflect different versions/configurations. We can recommend the exact range option based on your alarm thresholds and product compliance plan.
2) MEs-CO: Long lifespan + strong stability for CO alarms and monitoring
MEs-CO is also a fuel-cell (electrochemical) CO sensor designed for stable detection across long service life, widely used in smart homes, commercial buildings, underground garages, and fire monitoring.
Typical reference specs
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CO range: 0–1000 ppm (max 2000 ppm)
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Resolution: 1 ppm
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Response time (T90): <30 s
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Operating temperature: -20°C to 80°C
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Humidity: 15–90% RH
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Lifespan: 10 years
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Anti-interference + repeatability: highlighted as key features
Customer Value: Professional Quality with a Global Compliance Mindset
This certification achievement reflects our long-term focus on product safety and reliability across the full lifecycle—from design and materials to production and performance validation.
For customers building CO alarms, monitors, or safety systems, UL-certified sensing solutions can support:
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stronger market acceptance (especially North America-focused programs)
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clearer compliance discussions with integrators and end customers
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faster selection confidence when multiple suppliers compete on similar specs
We already have a growing portfolio of certified products, and this new certification expands the range of qualified CO sensing options available to our customers.
Recommended Use Cases
These two sensors are a strong fit for:
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residential/commercial CO alarms and CO monitors
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indoor garages and parking ventilation safety systems
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small generator CO monitoring scenarios
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commercial building safety and fire monitoring integration
Explore our CO sensor lineup: https://www.winsen-sensor.com/co-sensor/
FAQ
Is UL certification the same as “one global standard”?
UL offers certification services across many standards and product categories. Certification confirms the product has been evaluated against applicable requirements under the relevant UL program.
Which sensor should I choose: ME2-CO-Φ14×5 or MEs-CO?
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Choose ME2-CO-Φ14×5 when you need robust design options and multiple listed range variants (including higher-range listings).
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Choose MEs-CO when you prioritize long lifespan and stable performance for typical CO alarm ranges.
Do you support technical integration and documentation?
Yes—datasheets, application guidance, and OEM support are available through our team (please contact us with your target range, alarm thresholds, and device type).
If you are developing CO alarms, CO monitors, or integrated safety devices and need UL-certified sensor options, we’re ready to support your project with selection guidance, documentation, and supply continuity.
