LED 3-step alcohol breathalyser, with new & improved quick response technology. How to use: Press and hold the power button throughout the start-up and testing. First the yellow and red light on the LED will light up to indicate warming-up. Then the green light will light up to indicate ready for testing. Blow into the inhaler for 3-5 seconds. If only green light comes on, then alcohol level is less than 0.02%. If only yellow light comes on, then alcohol level is between 0.02% and 0.05%. If yellow and red lights comes on, then alcohol level is over 0.05%. With a torch and keychain. Includes 2 x AAA batteries.
Size:
Breathalyser: 6.5 (l) x 3.5 (w) x 1.8 (d) / Box: 11 (l) x 8 (w) x 2.5 (d) cm