To remove a Smart Home device: Open the Amazon Alexa app. Tap . Tap All Devices. Tap the device desired to be removed. Perform either of the following depending on the device: Tap for most devices. Ta...To remove a Smart Home device: Open the Amazon Alexa app. Tap . Tap All Devices. Tap the device desired to be removed. Perform either of the following depending on the device: Tap for most devices. Tap and then for some Z-Wave devices. Tap Delete in the pop-up window. The device is now removed from the list.