Description Technical Specifications Air Flow Rate 2.3 M/s Measurement Accuracy Better Than ± 20% Resolution 10 Ions Measurement Range 10 Million / Cm³ To 2 Million / Cm³ (KEC 900 II) 100 Million / Cm³ To 20 Million / Cm³ (KEC990 II) 1,000 Million / Cm³ To 200 Million/Cm³ (KEC990MII) Supply DC 12 V And Built-In Rechargeable Lithium Battery Type Of Ions Positive Ions And Negative Ions In The Air LCD Backlight Yes Average Valve Measurement Average Value Measurement Function (10 Seconds, Can Be Customized According To User’s Demands) Display LCD Digit Display Operation Environment 41 °F To 113 °F (5 °C To 45 °C), 95% RH Accessories DC 12 V Adapter, Ground Wire, Electrostatic Shielding Plate, Portable Aluminium Box And Clean Stick Optional External Accumulator Battery, Charger, Tripod Dimension 4.13 In × 6.49 In × 2.75 In (105 Mm x 165 Mm x 70 Mm) Weight 1.71 Lb (780 g)
