What functions can infrared products achieve?

Matching the corresponding brand remote control, and the mobile phone can control the corresponding home appliances (TV, set-top box, air conditioner, etc.) regardless of the end of the world. Support remote control learning, some buttons are not easy to use, learn a button to enter, it can still be used. It supports multi-platform audio control, move your mouth to say: I want to see the central set, turn on the air conditioner; smart speakers do things for you.