Send queries through web browser using http protocol

Need help with figuring out how to toggle and read the status of the door’s switches (OPEN or CLOSED) and the status of the lights in each room .

These information you are looking for are usually store in a server on the internet and to reach that there are APIs(Application programming interface) you can use and it mostly depends on the platform you are using, please provide more info about the picture you sent so I can help you more

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