Bison Correct Call 2.0 Basketball Alert System\nRedesigned to connect directly to BisonSHCLK300Shot Clocks (sold separately) with no need to interface with an existing scoreboard, the Bison Correct Call 2.0 system gives a visual indicator of shot clock violations and more. Complete, 6-piece LED strip design with high tack, self-adhesive mounting tape ensures ability to mount on the rear face of any manufacturers 72\” x 48\” or 72\” x 42\” glass backboard without tools.Includes components for 2 backboards. If being used without SHCLK300, requires a 24-volt signal from existing scoreboard or shot clocks. Proudly made in the USA. This item qualifies for FREE SHIPPING.\nPlease note: Correct Call Alert Systems are not returnable once backing is removed fromthe adhesive tape. Make sure your LED strips are compatible with your backboard before installing.\nFeatures:\n\nRedesigned to connect directly to BisonSHCLK300Shot Clocks with no need to interface with the existing scoreboard\n6-piece LED strip design with high tack, self-adhesive mounting tape ensures ability to mount on the rear face of any manufacturers 72\” x 48\” or 72\” x 42\” glass backboard without tools\nIncludes components for 2 backboards\nIf being used without SHCLK300, requires a 24-volt signal from existing scoreboard or shot clocks\nFREE SHIPPING\n\nItem # BALED2.0\n