... to be detected more than 300. Bright characters: red LED display data, clearly visible at night. The ... at the same time green light, yellow light flashing at the same time the middle of that equipment ... 4 seconds, if alcohol is detected, buzzer alarm, red and green light flashes at the same time. In ... greater than or equal to 0.50, only the flashing red light, accompanied by shortness of voice alarm. To ...