Grow Light Cord System 4 Socket/LE: Bulb Included, For Bulb Type A, 120V, LED, Linkable-several available in my closet. The flexible cable of string lights wraps onto or curves along surfaces to meet light coverage requirements for indoor plant growth. String lights can join together to add length as lighting needs change. They commonly hang from shelving, frames, or hooks and secure with cable ties so they can be rearranged or relocated.