Baby monitors

Audio monitors are simple and inexpensive. Video monitors add a camera, usually with night vision and sometimes pan and zoom, and come either with a dedicated parent unit or as an app on your phone. Dedicated units do not depend on your home wifi; app-based cameras are more flexible but rely on your network.

Movement and wearable monitors track breathing movement or oxygen data. They are reassuring for some parents but are not a substitute for safer sleep guidance. Retailer listings carry the manufacturer's own claims and specification.