Title: Good for a few months, then get ready to pay $ to recalibrate
Product review: At first I was happy with the device, as I felt the readings were accurate and consistent. After about 8 months, the readings became very inconsistent, probably an indicator that the breathalyzer already needed calibration. For example, a person blows into the device and gets a 0.2 reading. 5 minutes goes by, the same person blows into the device again, but this time gets a higher 0.8 reading. Since I purchased this device, the high price of calibration has jumped even higher from $20 to $25. Let me just say how unhappy I am with having to calibrate the Alcohawk Pro roughly every 6 months or so for the extremely high price (especially relative to the cost of the device itself) of $25. Rather than spending the money to calibrate the device, I'll probably just sell it and be done with it.
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