Note: Do not touch the high-voltage end Power cable length: about 1.2m Negative ion concentration: 200 million/cm⊃3; Output voltage: DC-15KV±0.5KV Input voltage: AC110-220V-50HZ/60HZ, Power: <10-15W Thank you 4. Use environment: temperature should not exceed 30℃, humidity should not exceed 80% 3. In order to prolong the service life of the product, use it with a fan, and the continuous working time should not exceed 1 hour. It is recommended to use it intermittently, that is, work for 1 hour and rest for 5-10 minutes. 2. Do not touch the tip of the needle with any objects,when it's work. 1. Make sure that the tip of the needle is upright and no objects touch.the button of the power supply have a line ,it's the ground wire . Please do not connect with the ground wire to the plate ,it's too close will be arcing leading to burn, please kindly know it . Before using, please read the following terms carefully AC110-240V Negative Ionizer Generator Ionizer Air Purifier Remove Smoke Dust Air Purifiers Negative Ion Anion Generator ionizer

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