4 Pack Vacuum Cleaner HEPA Filters for Cyclonic Series RO3753EA RO3731EA RO3786EA Advanced flat surfaced alcohol sensor. Quick response. SMD assembling, stable performance. Direct testing process LCD indication. Digital LCD display with blue backlight. Portable and fashion design. Audible warning beyond preset limit. Sensor fault self checking. Battery saved design,low voltage indication. Digital LCD display. Professional Breathalyzer Tester. Breath Alcohol Tester safety for drivers. Breath Alcohol tester needs mouthpiece. within 10 seconds. Broad range.<br> Auto warning beyond pre-set limit. Works time. Digital Output. Power saving design. Low battery alert. Instructions included. Five mouthpieces included. (Mouthpiece not necessary--simply blow into for 3-5 seconds) and lightweight design--fits into purse or pocket . Easy to use.<br> Model: AT6000<br> Detection Range: 0.00 - 0.20BAC% ; 0.00 - 2.00 g/L; 0.00 - 2.00BAC ; 0.00 - 1.00 mg/L; 0.00 - 200 mg/100mL<br> Alarming : 0.05% BAC; 0.50 g/L; 0.50 BAC; 50 mg/100mL<br> Test Accuracy: +/- 10% F.S<br> Working Voltage: DC 5V 3xAAA batteries(not included)<br> Working Current: less than or to 120mA<br> Environmental temperature:-10 to 50<br> Relative Humidity less than or to 95%<br> Display: 3 digits LCD display with blue backlight<br> Colour: black<br> Material: plastic<br> Package Contents:<br> 1 * Alcohol Tester<br> 10 * Mouthpieces<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.