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Contact Supplier• Display: LCD Screen with History Records saving
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• Buzzer Alarm: On/Off functionality
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• Temperature Unit: Switchable between Celsius and Fahrenheit
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• PM2.5 Sensor Technology: Laser Scattering
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• HCHO/TVOC Technology: Semiconductor sensor
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• Temperature: Temperature and Humidity Sensor
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• AQI Detection Range: 0 – 500
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• PM2.5 Detection Range: 0 – 999 µg/m³
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• HCHO Detection Range: 0.001 – 1.999 mg/m³
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• TVOC Detection Range: 0.001 – 9.999 mg/m³
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• Battery Type: Rechargeable Li-battery (1200 mAh)