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kaiterra Laser Egg 2+ - High Accuracy, WiFi Enabled Indoor Air Quality Monitor with PM2.5, TVOC Temperature and Humidity Sensors Portable Room Air Purifier (White)
500 sq ft :Suitable for a Medium size room
Pre-Filter : Removes large unwanted particles like dust, pollen,insects,etc
3.6 km/hr : Large rooms need higher CADR ratings to filter more air per min
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