The Levven mobile app connects to all the Levven switches and controllers in the home via the Levven Q gateway. If you have a Levven Q, install the Levven app to personalize and configure every switch and controller.
With typical usage, the battery in a Levven switch will last for 10+ years. Use the Levven app to check the level of battery life remaining.
Review the How to Check the Battery Level in a Levven Switch video (1:08).