CET Introduces Next-Generation Lead-Free O₂ Sensor for cGas Detectors
A next-generation lead-free oxygen (O₂) sensor delivering a longer lifespan, shorter warm-up time and more reliable oxygen monitoring.
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30 Years of Excellence
Safer Air
Everywhere.
Industry-leading gas detection systems protecting parking garages, warehouses, data centers, chiller rooms, and hundreds of other critical environments.
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Protecting critical environments across diverse industries with cutting-edge detection technology.
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Critical Environment Technologies
Critical Environment Technologies (CET) is the largest independent commercial gas detection manufacturer in North America. We've developed more than 100 different products that are sold in all states & provinces and can be found in more than 20 countries globally. Ongoing product development ensures our equipment is at the leading edge of a rapidly evolving space. We maintain a strong commitment to customer satisfaction, health, safety and environmental protection.
Why CET?
- Safe: Experts in Gas Detection
- Reliable: Products That Just Work
- Service: Leading in Customer Support
- Simple: Easy to Install & Maintain
Latest from CET
Stay updated with company news, product announcements, and industry insights.
Oxygen Monitoring in Labs That Use Nitrogen
As laboratories continue to expand their use of liquid nitrogen and nitrogen gas, understanding oxygen deficiency hazards has become an essential part of laboratory safety design.
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Digital Gas Detection Integration: BACnet, Modbus and Smart Building Connectivity
Digital communications transform gas detection from a standalone safety system into a connected source of operational intelligence offering better visibility, improved maintenance capabilities and greater control over ventilation and alarm systems.
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