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The "NT-C101A" is an air ion counter that can measure positive and negative ions by switching between them. By adopting a coaxial double cylindrical sensor compliant with JIS standards, it achieves highly reliable measurements. The displayed measurement values are calculated based on a conversion formula in accordance with JIS B 9929 standards, allowing for a wide range of ion quantity measurements from 10 to 2,999,999 ions. 【Features】 ■ Achieves miniaturization and ultra-low cost with a unique structure ■ Warm-up time is 10 seconds ■ Dual power supply system with AC power and dry batteries ■ Easy operation with a large, easy-to-read display ■ Usable with dry batteries * For more details, please refer to the PDF materials or feel free to contact us.