Feature: 1. CLEAR DISPLAY: The portable breath tester uses high definition display screen to ensure clear observation, with abnormal alarm function. 2. PURIFICATION BIN: Built in purification bin removes impurities and retains substances to be measured, ensures more accurate measurement. 3. NO CONTACT: The detector is non contact design to avoid foreign matters generated by blowing pipe and affecting the detection results. 4. ABS HOUSING: The housing of the tester is made of ABS material, with good toughness, wear resistance, scratch resistance, light and durable. 5. MEASURING RANGE: The measurement range is 0-0.19%BAC, 0-0.95mg/L, widely used in traffic security inspections, construction sites, etc. Specification: Item Type: Breath Tester Material: ABS Battery: 2 x AAA Battery (not included) Test Range: 0-0.19%BAC, 0-0.95mg/L Value Error: ±0.01%BAC Operating Temperature Range: -5-45℃ Storage Temperature Range: -20-50℃. Package List: 1 x Breath Tester1 x User Manual Note: If the test is conducted under low battery power, there is a certain deviation between the test value and the actual value.