“When you open the package, put a mouthpice on (optional) and press the start button. Once the beep starts you have to blow into the mouthpiece and continue to blow until the beep stops. The readout will tell you your BAC I don't know what happens if you blow over .08 because I haven't gotten it that high yet. It works great!This is totally worth the money! A lot cheaper than a DUI!”
“Got this for my 22 year old son to keep on his keychain. It’s a great device and seems to be very accurate. Definitely useful for those moments one may think they are “perfectly fine” when in truth they are not.”
“The last one I got is .02 off this is confirmed by an older backtrack and my interlock device that is serviced every month and monitored by the state.”
Hello Blake,
I'm sorry you're having some issues with your device. There could be some factors impacting your readings. I will reach out to you directly to troubleshoot your unit right away.
Vincent DelaPena
Customer Support
