Perhaps I should of said to read the device manufacturers HTTP API documentation rather than “user manual”. Presuming their device supports and has such an API.
That is something outside of the scope of the topic in this thread and outside of the scope of this Ezlo IP/WIFI device Generator plugin.
The Google Home and Alexa voice assistants and the device manufacturers both construct tools for their devices to be integrated into the voice assistant apps / eco systems. Usually cloud based APIs and user account authentication and syncing etc.
When its all working properly again Ezlo will / do have services and skills that enable us to expose all our paired devices on the Ezlo hub (and virtual devices for that matter) to be placed into the voice assistant apps and thus be controlled by them.
Voice assistant integration is another topic and subject.
Your Foscam HTTP CGI comment is a better example of using this Ezlo plugin to control some aspects of your Foscam cameras.
Basically any devices, services, applications locally or even via the Internet (cloud based) that has a HTTP API for controlling it, could potentially be used with this Ezlo device generator plugin.
For example I created a virtual switch here sending http commands to IFTTT and web hooks to control something.