Product FeaturesThe D8 series ion fans include single / double / triple air outlet ion fans.The 2.2-inch color screen displays balance voltage, address, air volume, network status, etc., making everything clear at a glance.Equipped with power indicator light and alarm indicator light.The function editing adopts a menu-based design, making parameter selection and editing simple and easy to understand.Balance: Fine-tuning calibration is available, and the balance alarm value is adjustable.The ion emission needle adopts a plug-in design, allowing individual replacement of one needle. It is made o...