Description Overview GAOTek air quality meter tester PM 2.5 laser detector is a professional, portable and handheld PM 2.5 detector. The detector is based on laser scattering particle detection technology, it can accurately calculate the number of particles with different particle sizes in the air. The detector has a built-in color LCD screen for the font to display clearly, detected figures can be clearly demonstrated in the 196 ft (5 m) outside. The detector contains a rechargeable lithium battery to make it can be long-term use in different situations. Technical Specifications Supply voltage 5 V or 1 A Average current 200 mA Battery Duration 8 hrs Measured data PM 1.0 or PM 2.5 or PM 10 Resolution 240 × 400 Measuring principle laser scattering Measuring range 0 μg/m³ to 1000 μg/m³ Measuring accuracy ± 15 % Response time ≤ 5 Sec Size 3.2 in (8.1 cm) Product size 4.2 in x 2.7 in x 1.6 in (109 mm × 71 mm × 42 mm) Weight 0.25
