Accurate calibrations Our alcohol tester uses a high-precision sensor to deliver consistent, reliable BAC readings in the range of 0.00% to 0.19%. You can trust the readings with every use. Safe to use Designed with safety in mind, this tester features a simple one-button start and the option to turn it off at any time to protect the user. Versatile design Ideal for home or workplace safety, it detects alcohol content to help protect you, your family, and colleagues. Requires two 1.5V batteries (not included) and is built to meet everyday requirements. Streamlined process Test with a single button and view fast, accurate results on an easy-to-read LCD screen. The one-button operation delivers a straightforward, time-saving testing experience. Use scenarios - Before driving after a social event to verify you are below the limit. - At work to confirm operators are within safe limits before operating machinery. - At home during gatherings to monitor guests and maintain a safe environment.