Personal Alcohol Tester
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It is designed to detect the percentage of the alcohol in your breath, so you may know how much you are drunken.
This unit uses the innovative MEMS(Micro Electro Mechanical System) Gas Sensor. Although tiny in size, it has the feature of much larger(and more expensive) unit. You can also use the unit as a gas leakage tester.
Please feel free to contact me for more information.