A breathalyzer, also called a promille tester, is a simple and practical way to determine the alcohol content in the body. In Switzerland, the legal alcohol limit in road traffic is 0.5 per mille. For professional drivers, new drivers, learner drivers, driving instructors and people accompanying learner drivers, the limit is 0.1 per mille. To avoid accidents and unpleasant surprises during a police check, it is important to know your blood alcohol level. But also as an employer, the use of such a device for prevention can be worthwhile. Because according to the accident insurance law, the employer is obliged to do everything possible to prevent occupational accidents. If one occurs under the influence of alcohol, it may be a punishable offense. This can lead to the accident insurance company reducing benefits. At and you can buy your suitable breathalyzer from a large selection.