Supply Voltage Max. V = 9 / Width mm = 55 / Product Type = LED Board / Length mm = 40 / Kit Type = Sound to Light Unit Board / Kit Contents = 14x Various Resistors, PCB, 4x LEDs, 4x Transistors, 4x Various Capacitors, Trim Potentiometer, Microphone / Height mm = 35 / Family Name = Development Boards