I made some KONA COFFE & added some N.A. IRISH CREAM to the coffee it’s NON Alcohol , NA. I’m blow’n .OOO’s on it. for about 5 rolling tests and then the Damn Thing reads .023 and the frickin horn and lights are going on and off. people are looking at me like I’m telling them to get the hell out of my way. I’m in Heavy Traffic. tried to get over to the shoulder of the road, and wait for along frickin 2 mins. Screw’n around with that device, well I might as well floss my teeth, cut my nails, and TEXT. what’s the difference.