Display - 1.4-inch LCD color display screen; green color indicates sobriety, accompanied by a voice prompt: Thank you for your cooperation. When alcohol is detected, the display turns red, accompanied by a voice alert: You have been drinking.
Measurement Accuracy - When the standard gas concentration is 50mg/100mL BAC: When the blowing distance is less than 5cm: 5.0mg/100mL When the blowing distance is between 5~10cm: 6.0mg/100mL When the blowing distance is greater than 10cm: 10.0mg/100mL