It needs to be plugged in. If the width of the sofa has been determined, you can leave a power socket on both sides of the sofa, and the role of the socket is to provide power for the floor lamp, charge the mobile phone, or power the tea stove on the tea table when drinking tea.
If the sofa is electrically adjusted, leaving the socket can play a better role.
The socket is reserved on both sides of the sofa, and the lamp can be inserted as a soft light source supplement, and the household hanging press and vacuum cleaner can be plugged directly here for convenience.