The babyphone's camera is battery-powered, which means it has a certain amount of autonomy. However, I don't have any precise information on whether it needs to be constantly connected to the mains. It's likely that it can be used without being constantly connected to an electrical socket, but this depends on how long it's used and the capacity of the battery. For more details, it would be best to consult the user manual or contact Momcozy customer service.