Important: Beginning in December 2020, to receive the Works with Alexa certification, a Zigbee device must support the WWAHu cluster and Zigbee 3.0.
After you have implemented the Zigbee protocol on your smart home device, test the protocol thoroughly with an Echo Plus or an Echo 4thGen device.
I am developing a Zigbee Thermostat and I can manage to use my own app and cloud.
Based on WWA requirement, all Zigbee device needed to integrate with Echo Plus, however, echo plus doesn't support thermostat yet.
Can I still certify Zigbee thermostat with WWA without using testing thru Echo Plus and thru smart home skill integration?
Or how can certify Zigbee thermostat with WWA?