HT 611 Breath Alcohol Tester Safety Feature: The breathalyzer features visual warnings that alert you when your blood alcohol concentration exceeds safe levels. This can assist you in making informed decisions about whether you're safe to drive or need to wait for the alcohol to clear from your systemNon-Contact Testing: The non-contact feature of this personal breathalyzers allows for quick and easy testing, making it an ideal choice for personal use. It provides an accurate reading without the need for direct contact, ensuring your health and safetyHigh Resolution LCD Display: This alcohol testing breathalyzer has a clear and easy-to-read LCD screen that provides accurate and reliable readings. It displays the alcohol content in your breath in a simple format, making it easy to understand and interpretPortable and Convenient: The HT 611 Breath Alcohol Tester is compact and lightweight, making it perfect to carry around in your pocket, purse, or glove compartment. 1.An instrument that analyzes the concentration of alcohol in the blood anytime and anywhere 2.Non-contact use, no need to accompany breathing mouth, more convenient to use. With key chain design, small size, easy to carry 3.The breath alcohol tester uses advanced semiconductor alcohol sensor to quickly and accurately detect the breath of alcohol 4.With battery saving design and low voltage indication 5.The test value is directly displayed on the LCD, and the reading is easy and simple. Audio and visible warnings exceed preset limits Specification: Item Type: HT-611 Digital Alcohol Tester Detection Range: 0.000-0.20% bac & 0.0 -1.9 g / l Accuracy: 0.05% + /--10% bac Pre-set Limit: 0.05% alcohol content Operating Time: Warm up 15-30s Response Time: <5s Automatic Shutdown: About 1 minute Battery: 1.5V AAAx2 (not included) Size: 50 x 105mm / 2 x 4.1in Package List: 1 x HT-611 Digital Alcohol Tester 1 x Nylon Rope 1 x User Manual