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this is a normal phenomenon
Suggested age: 9-10Y
CN: Jiangsu
Voltage : ≤36V
Measurement of household in-instrumentation instrument Color:White this is a normal phenomenonName: Formaldehyde detector Model: DM501 Test items: formaldehyde, TVOC, AQI Test principle: intelligent color screen Product size: 14 * 4 * 3. 6cm Alarm mode: beep alarm Power supply: 1000mA lithium battery
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