● Touch button, LCD display.
● RFID filter material identification.
● Outlet decoration lamp, can make atmosphere lamp.
● Laser - type dust sensor for more accurate detection.
● TVOC odor sensor.
● Temperature, humidity sensors.
● Brushless dc motor, more durable and quieter.
● Negative ion generator, human near induction.
● Filter material use time accumulation, expiration replacement reminder.
● Can be added with Wifi module or 4G module to achieve mobile APP control.