GCS Technical Services supports policing in Ontario by working providing service, repairs, and sales of breath testing equipment and speed measuring devices. GCS Technical Services is the only authorized service and sales centre in Ontario for the Intoxilyzer, Ontario's most used device for alcohol breath testing. We can also assist with roadside screening devices. At GCS Technical Services we deal with the leading edge equipment providers and can be your 'one stop' for service, products, parts, and sales.