Which smart device can turn lights on and off with your voice?

What is a smart speaker used for?

Which device can clean your floor automatically?

What does a smart thermostat control?

Which device lets you see visitors at your door from your phone?

What can a smart refrigerator do besides keeping food cold?

Which device can you use to control your TV without a remote?

What is a smart plug used for?

Which smart device helps control lights, fans, and more using voice commands?

Which smart device can adjust brightness based on time of day?