Professional sales COM3200proII air ion detector is a professional, high precision of the air ions counter. Sensor adopts Japan JIS certification of determination method of ion density in air coaxial twin tube structure with two, that ends it, compared with other simple plate type structure, improved accuracy, and comes with a special analysis software, can easily connect the computer to download records, analysis and printing. Adapted to the various functional ion products, forest scenic spot, the administration, hospitals, rehabilitation centers and other places, meet the needs of a variety of environment detection. Negative oxygen ion detector features: 1. Fast, high precision sensors, test result, especially under the condition of low ion concentration is still testing can be realized, can detect the positive/negative ion ( Manual switch) 2. Completely in line with the Japanese JISB9929 gas ion density standard strict requirements of the measuring methods of 3. Compact structure, light weight, integrated temperature, humidity sensor and lithium battery, can adapt to various conditions of outdoor test need 4. Detection range ( 0 ~ 2000000 / cm3) And can be transverse or vertical detection, 5 does not affect the test result. Built-in RSS232 data port, with powerful dedicated software, easy to connect the computer to download records, analysis and print 6. Super power saving design, standby when can close the suction fan to save electricity.