Google Home control the light bulb via voice command

You can control the device via voice command.

Here are some examples of commands you can use:

To turn smart lights on/off: "OK, Google, turn on/off my lights."

Dim smart lights: "OK, Google, dim my lights to fifty percent."

Make incremental temperature changes: "OK, Google, raise the temperature 1 degree."

"Ok, Google, raise the temperature to *%."

Here are some preset words you can use to control your device and change it's state