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Size: 90*70*35mm
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Weight: 116.6g
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Color Box size :140*125*41mm
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Weight: 172.2g
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Color: white & black
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Test temperature range: -10°C to 70 °C
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Humidity test range: 0-99% RH
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Reaction time: 1-3s
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Different font colors show different air quality, green 400-799ppm, yellow 800-1199ppm, orange 1200-1599ppm, red 1600-1999ppm, more than 2000ppm four colors flash at the same time