Portable Air Ion Tester Meter - Digital Negative & Positive Ion Counter for Air Purifiers, Ionizers | Monitor Indoor Air Quality for Home, Office, Spa

Product Description

Usage: 1. Switch to the "ON" position and wait for the product number to be 0. Before the number becomes 0, your fingers cannot touch the upper and lower metal pieces, otherwise it will affect the measured value. 2. keeping the thumb and the square in front of the sheet metal, the metal plate toward the back of the air tested negative ion generator, and tested the closer air anion generator tester readings higher, whereas smaller. Therefore, to ensure the accuracy of the measurement results, leave the meter and test negative ion generator to maintain an appropriate distance. 3. the measurement process, do not touch the metal piece to the back of the instrument, otherwise it would be inaccurate readings. 4. If the reading is not preceded by the measurement symbol is measured positive ions, if the display "-" is negative ion surface. 5. To re-measure should first turn off the power, then restart it. 6. The measurement method textiles: the thumb in contact with the front metal plate, the metal plate toward the back of the textile gently rubbing test, the display will show the ion concentration and to polarity, which can produce ions as the ability of a fabric kinds of important reference. 7. To measure again, you need to shut down and restart, and repeat the above steps. Specification: Power supply: 2 x 1.5V LR44 button battery(built-in) LCD Display: Maximum reading of 1999 Test range is between 1x10000 to 1999x10000 ions/cc Resolution:1x10000 ions/cc Dimensions: 8 x 3 x 1.3cm/3.15 x 1.18 x 0.51inch Weight: 89g Package Included: 1x Air Ion Tester 1 x Blue wrist strap Note:The product has 2 built-in button batteries. In addition, four external button batteries are needed, but the four external batteries are not included.