This RAZ Imports slim design remote control will work with all 10' and 20' LED string light garlands that are remote control enabled (G3737505, G3737508, G3737507, G3737510, G3737520, G3737521).. Turn your LED string light garlands “on” and “off” with this easy to use remote control. One remote can be used with all 10' and 20' LED string light garlands that are remote control enabled. A great way to control hard-to-reach LED string light garlands, A long-lasting CR2025 3.0V lithium button battery is included.