SPECIFICATIONS: LCD Backlight:Green Detection of gas concentration of PM2.5 The measuring principle of laser scattering theory PM2.5 measuring range 0~999μg/m3 Resolution of 1μg/m31 Temperature measurement range 0 ~ 45 ℃ (32 ~ 113 ℉) Humidity measurement range 0 ~ 99% RH To alarm: Acoustic,optical double alarm, can set thealarm value,an alarm sound is divided into 80dB PACKING INFORMATION: Power 3.7V li-battery Product Net Weight 148g Product Size 159*66*31mm
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