Apple Inc. is working on a slate of devices aimed at challenging Amazon.com Inc. and Google in the smart-home market, including new displays and a faster TV set-top box, after relaunching its larger HomePod speaker.

The push into smart displays will start with a tablet product — essentially a low-end iPad — that can control things like thermostats and lights, show video and handle FaceTime chats, people with knowledge of the plans said. The product could be mounted on walls or elsewhere using magnetic fasteners, positioning it as more of a home gadget than a regular iPad.

Apple has also discussed the idea of building larger smart-home displays, according to the people, who asked not to be identified because the deliberations are private.

While the iPad already has smart-home features, standalone smart-home devices — often designed as countertop or wall-mounted appliances — have grown increasingly popular.