Yes, Smart Lock R20 supports both Alexa and Google Voice Assistant (GVA).

You can give a verbal command to Alexa/Google Voice Assistant to lock and unlock the Smart Lock R20 by voicing your code.

To set up and use your Smart Lock R20 with Alexa or Google Voice Assistant, please refer to Using Amazon Alexa for eufySecurity Devices and Using Google Assistant for eufySecurity Devices.