Breathalyzer

personal, semi-conductor gauge, the display, up to 4 ppm, up to 0.4 YOU, power supply: batteries

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electrochemical sensor, the display, up to 5 ppm, a food: batteries

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personal, semi-conductor gauge, the display, up to 4 ppm, power supply: car cigarette lighter/battery

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personal, semiconductor sensor, 0.2-0.5 ppm

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personal, semi-conductor gauge, the display, 0.2-1 ppm, 2 measurements per day, a food: batteries

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special, electrochemical sensor

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personal, semi-conductor gauge, the display, up to 3 ppm, 3 measurements per day, a food: batteries

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special, electrochemical gauge, the display, up to 4 ppm, a food: batteries

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personal, semi-conductor gauge, the display, up to 4 ppm, a food: batteries

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personal, semi-conductor gauge, the display, up to 4 ppm, power supply: car cigarette lighter/battery

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