A hard-wired hidden camera means it is not wireless. It means you must have a power video wire connected directly from the camera to your security DVR. Depending on your specific application, this wire can be hidden behind a baseboard or drywall. Some people drill a hole in their floor and run it through a crawl space or basement. With a hard-wired camera, you will be able to view live footage from the DVR or your smart phone, as well as record all footage.
This collection is strictly 1080p high definition cameras. They can only be viewed through an HD DVR. They cannot be connected directly to any kind of TV or monitor.