Air Ion Tester - Ukur kadar ion di udara

This Air Ion Tester is designed to test high level concentration of + or - air ion.
It is effective to test the electric charge on the surface of textile.
With it you can estimate whether the air ion generator or air purifier is working in good state.
The reading of the tester is correlative to the air ion concentration, but not exactly the number of it.
In factor, this tester can only provide you a rough measurement to the air ion source. Please don't take it as an precision instrument.

DISPLAY
    LCD Display: Max reading of 1999.
    Overflow and display only "1".
    Low battery indication

Features:
    Test range is between 1x10000 to 1999x10000 ions/cc
    Resolution:1x10000 ions/cc
    Tiny shape
    Very easy to hang as a necklace
    Display concentration of positive and negative air ion
    Check Ion Generator
    Test the textile or cloth, judge the ion's polarity and concentration
    Attention: don't touch the rear square metal of the tester when testing
    Power supply: 1.5V x 2 LR44 button size battery (Included)