KT-401 Mini Air Ion Tester Counter with LCD Display High Concentration of +/- Air Ion;

KT-401 Mini Air Ion Tester Counter with LCD Display High Concentration of +/- Air Ion

Features:
This Air Ion Tester is designed for test high level concentration of negative or positive air ion
It is effective to test the electric charge on the surface of textile by strict
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

Note: please don't take it as an precision instrument

Functions:
LCD display: max reading of 1999
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 (not included)
Size: 80*30*10mm
Weight: 90g

Includes:
1 x KT-401 Mini Air ion Tester