ATI Airtest Technologies Inc. manufactures and sells air testing equipment and related services in Canada and the United States. It offers WiFi and EnOcean transmitters; carbon dioxide (CO2) transmitters for control of ventilation in buildings; parking garage ventilation products comprising stand alone gas transmitters, combined sensor/controllers, and custom configured control systems for on/off and variable modulation of fan systems; indoor wall mount dew point transmitters, indoor humidity and temperature transmitters, outside air dew point for economizer control, humidity and dew point probes, and surface condensation switches. The company also provides industrial air velocity, HVAC airflow monitoring, and low airflow/laminar airflow monitoring products; handheld and portable devices; CO2 modules, air velocity probes, humidity elements, humidity and temperature measurement modules and probes, and humidity calibration; sensors/transmitters and ventilation controllers for measuring gases; industrial low dew point; industrial humidity and temp measurement; moisture in oil transmitters and portable moisture in oil measurement; and materials and tools to perform calibrations on various sensors. ATI Airtest Technologies Inc. was incorporated in 1996 and is headquartered in Delta, Canada.