Breathalyzer, BAC Tester with LCD screen with 12 Mouthpieces. Professional breathalyzer equipped with a precise semiconductor alcohol sensor. Quickly provides results to determine if it is safe to drive. Includes 12 replaceable mouthpieces which are cleanable and reusable. Features automatic alarm function: if test result exceeds 0.05% BAC or 0.50 BAC or 0.25 mg/L or 50 mg/100 ml, the device will beep continuously and warn the driver not to drive. Specifications: Color: black Power: 2 AAA batteries (not included) Warm up time: within 10 seconds Response time: within 5 seconds Digital display results: %BAC / BAC / mg/L / g/L Detection Range: 0.00 - 0.19% BAC; 0.00 - 1.99 BAC; 0.00 - 0.99 mg/L; 0.00 - 199 mg/100 ml Measurement accuracy: +/-0.01% BAC Alarm level: 0.05% BAC; 0.50 BAC; 0.25 mg/L; 50 mg/100 ml Package content: 1 x breathalyzer 12 x mouthpiece