How do I turn the unit on and off from the Gradient app? June 30, 2023 00:46 Updated Open the Gradient app. At the home screen select the unit you desire. At the Set Temperature screen. At the bottom center of this screen there is a Power button. Use this button to turn the unit on/off. Related articles How can I get in touch? Will the Gradient be available outside of the US? What comes in the install kit box?