Joseph-HL, If you are wanting to get "Works with Amazon Alexa" certification for a hardware device, in addition to skill certification, check this page:
Hi Joseph-HL. If you have an Alexa smarthome skill, with account linking and which as part of its functionality, must interact with smart home devices, we do not accept hardware to test. Instead how we deal with this is as follows:
This way, the testing team should be able to interact and test the functionality of the skill.
Costs for WWA testing 1 Answer
How can i apply WWA cetification 0 Answers