PD_2 Kibeland LCD Display Digital Breath Alcohol Tester with Semi-conductor Sensor 5 Mouthpieces

Sensitive and High Accuracy Audio warning beyond pre-set limit Quick response and resume Digital LCD display with blue backup light Battery saved design, low voltage indication DESCRIPTIONS: This breath alcohol tester is kind of tester designed to measure concentration result of the breathed alcohol in the human body. This device adopts advanced flat surfaced alcohol sensor which has excellent sensitivity and reproducibility, fashional and portable design make it more convenient for personal use. When the alcohol content exceeds the preset limited level, this device would send an audio and video warning to remind your safety. OPERATION INSTRUCTIONS: 1. Slide down the battery compartment on the back side, insert 3pcs AAA 1.5V batteries inside according to battery polarity indication and close it. 2. Press the switch button and last for 1s, the tester would be power on with a buzzer brief ringing . ""Wait"" shows on down side of screen, meantime it shows 100 to 000 countdown