This 5 circuit Aluminum shell RGBWW amplifier is suitable for all kinds of  constant voltage  led controller. It can enlarge the led controller signal,and can receive the PWM(Pulse width module) to output the signal, then it can make the same effect with the controller. when add each conditional amplifier, can connect and controlled twice more led lights.theoretically, one controller can connector with thousands of  this RGBWW amplifier, and make the same effect.