Bison InTime Shot Clock Wireless LED System Version Two Correct Call for School Gyms and Varsity ProgramsBison InTime Shot Clock + Correct Call 2. 0 LED System SHCLK400 Bring your gym into full NFHS compliance with this all in one wireless shot clock and LED backboard system. The SHCLK400 combines two InTime shot clocks with two Correct Call 2. 0 LED backboard systemsdelivering crystal clear 35 second countdowns and unambiguous end of period signals without rewiring your facility. Features and Specifications Includes 2 InTime shot clocks and 2 Correct