【High Precision Alcohol Detection】This portable breathalyzer accurately measures alcohol concentration in breath, providing reliable results for personal or professional use. 【Tri-Color Indicator System】Features green, yellow, and red LED indicators for clear and instant visual feedback on alcohol levels. 【Semiconductor Sensor Technology】Utilizes advanced semiconductor gas sensor technology for precise and consistent measurements. 【Wide Operating Temperature Range】Functions effectively from -5℃ to 45℃, suitable for various environmental conditions. 【Integrated LED Emergency Light】Equipped with a white LED light for added functionality and safety in low-light situations. 【Portable Design】Compact and lightweight, making it ideal for use at home, in vehicles, or for law enforcement purposes. Specifications: Measurement object: Alcohol concentration in breath Detection method: Semiconductor gas sensor Working voltage: 4.5V Using temperature range: -5℃～45℃ Storage temperature range: -20℃~50℃ Indicator light: green/yellow/red Battery: 3 AAA 1.5V batteries (not included) Current: 120mA LED emergency light: white light Language: English