The Bykski 5v Flow Indicator Addressable RGB (RBW) LED Ring Light (B-RBW-RL) is an LED ring used specifically on their hexagon flow indicator (B-FMpa-HC Version 2) These are powered by the 5v line. When used in conjunction with a controller the LED color and mode can be controlled. Features Bykski Aura System Specifications Model:B-RBW-RL Brand:Bykski Voltage:5V onlyDimensions:LED Ring: 14.45mm ID x 30mm ODMetal Mount: 45mm OD Compatibility LED Type:5V RBW Flow Indicator:B-FMpa-HC (Version 2) Parts Included 1x Addressable RGB (RBW) Ring Light 1xCover 2x Mount Screws Warnings Not responsible for any damage caused by or when using this product. Please use at your own risk.