Alcohol Countermeasure Systems (ACS) is a leading producer of alcohol interlocks and Breath Alcohol Testers. Originally designed for law enforcement in 1976, the ACS product line has expanded to serve the automotive, industrial, law enforcement, public and personal safety markets. With numerous patents worldwide, ACS remains a pioneer by employing over 270 industry experts to produce some of the most accurate and reliable Alcohol Sensing Equipment available in the industry. Corporate headquarters are located in Toronto, Canada. Customer service is supported globally through our satellite offices in Australia, Europe, Asia and the United States of America.