LED controller, it is a tool to control the led colors changing. 

As to the LED strips have PWM, SPI and DMX512/1990 these 3 signal transmission, so there are three version controllers corresppondingly.  

PWM LED controller is mainly for the single color, analog RGB and analog RGBW RGBTW LED tapes; SPI Digital LED controllers are for the digital IC chip led pixel strips; DMX LED controller is for the DMX512 IC chip led tapes. 

Aim to choose the suitable controllers, please depends on your led tapes and installation environment. 

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