


Critical Environment Technologies
Critical Environment Technologies (CET) of Canada is a leading innovator in the design, manufacturing, and servicing of fixed gas detection systems. Their comprehensive product line includes self-contained systems, controllers, transmitters (gas detectors), and Indoor Air Quality (IAQ) monitoring instruments, all engineered to the highest standards of reliability and precision.

cGas Monitor: for Indoor Public Spaces (Offices, Showrooms.)
The indoor monitor for CO or CO2 features selectable particulate measurement options for PM1, PM2.5, or PM10, with optional relative humidity and temperature sensing. It is specifically designed for use in publicly occupied and frequented spaces such as offices and showrooms. This monitor is ideal for environments where integrated demand-controlled ventilation (DCV) is employed to enhance comfort, maintain air quality, and promote energy efficiency.
cGas-SC: Self Contained Detector for small size workshops
The cGas-SC Self-Contained Detector-Controller is designed for monitoring CO and NO2, with the capability to support an additional third remote sensor up to 61 meters away. This device utilizes pre-calibrated, plug-and-play smart sensors, ensuring ease of use and reliable performance. It is housed in a standard water- and dust-tight, corrosion-resistant enclosure rated IP54, with an optional splash guard for enhanced protection.


FCS Flexible Control System: Central CO & NO2 Detection System for Large Garages
The FCS Flexible Control System is available in 4, 8, 32, or 128-channel configurations, capable of accepting inputs from Modbus and/or analog transmitters, with Modbus or BACnet output to a Building Automation System (BAS). It features fully programmable alarm and control functions, including priorities and logic control, and is equipped with four internal dry contact relays.
YESAIR - 8 Channel IAQ Monitor
The YESAIR 8-Channel Indoor Air Quality (IAQ) Monitor is a versatile, battery-powered, portable instrument designed for monitoring temperature, relative humidity (RH), and up to five gases. It supports over 30 plug-and-play sensor options, making it suitable for detecting a wide range of gases, including ammonia, carbon dioxide, carbon monoxide, chlorine, formaldehyde, hydrogen, methane, oxygen, ozone, sulphur dioxide, TVOCs, and more. This handheld monitor is ideal for intermittent or continuous IAQ monitoring in residential and commercial buildings, hospitals, schools, airports, research facilities, and other environments.


YESAIR Incubation Verification Monitor
The YESAIR Incubator Verification Monitor is a handheld gas monitor designed for precise and reliable measurement of carbon dioxide, oxygen, temperature, and relative humidity in incubators. It is ideal for use in hospitals, laboratories, IVF facilities, poultry incubators, infant incubators, bacteriological incubators, and biomedical research facilities, ensuring accurate environmental monitoring for critical applications.