You can use your voice to control your "air purifier". From now on, enjoy your smart life! Ok Google, turn on air purifier. Ok Google, turn off air purifier. OK Google, set the air purifier speed to 1. OK Google, set the air purifier speed to 2. OK Google, set the air purifier speed to 3. OK Google, set the air purifier speed to 4. OK Google, set the air purifier speed to 5. OK Google, set the air purifier speed to 6. OK Google, set the air purifier speed to 7. OK Google, set the air purifier speed to 8. OK Google, set the air purifier speed to 9. OK Google, set the air purifier speed to 10.