Unfortunately, the re-calibration process requires that the Breathalyzer be physically mailed or taken to a professional service center, at which point the device must be evaluated and proper steps must be taken for calibration with an expensive simulator system. The process is costly for both consumer and service center, and the delay of processing and shipping back-and-forth can be quite a loss. The Pre-Calibrated Replaceable Alcohol Sensor Modulecan eliminate the delays and complications of re-calibration by allowing you to simply "snap out" an old module and "snap in" a new module. This way, you can get back to reliable, accurate testing in a matter of seconds! Benefits of using Pre-Calibrated Alcohol Sensor Modules * NO CALIBRATION EVER! * No Delay means No Downtime * No Residue Buildup (Which Calibration Service Cannot Remove) * Replacing the Sensor Module means Restoring the Device as Brand New

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