Safe and Easy to Use: Blow for 3-5 seconds near the detector blow port, then wait a few seconds for the result to display. No contact with the device is required. Testing Result Indication: If the result is 0.02%-0.05% BAC (0.2-0.5 g/L), the screen shows Caution. If the result is 0.05% BAC (0.5 g/L), the screen shows Danger with an audible and visual alarm. Compact and Portable Breathalyzer: Features a compact design and portable size. The advanced sensor ensures measurement accuracy and convenient use wherever you are. Professional Alcohol Tester: Detects 0.00%-0.19% BAC (0.0-1.9 g/L) with 0.01% BAC accuracy. The test result can be switched between g/L and mg/mL. 2-3 Use Scenarios: - Before driving to confirm you are within a safe limit. - After social events to check impairment levels. - In safety-conscious workplaces or events that require quick alcohol screening. Specifications at a glance: - Detecting range: 0.00%-0.19% BAC (0.0-1.9 g/L) - Accuracy: 0.01% BAC - Result units: switchable between g/L and mg/mL