In general, all Z-Wave devices are under a manufacturer warranty of 1 year. Product warranty comes with fine terms and conditions which may differ among different Z-Wave manufacturers. You may find out about the warranty policy from most Z-Wave manufacturers on this site.
eVida understands your concerns with the uncertainty involved in activating your warranty rights. Hence we are committed to deliver quality after-sales service to manage your Return Merchandise Authorization (RMA) request directly with our Z-Wave partners. However please note that all hardware warranties are strictly between the you (end user) and the device manufacturer.