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Description:Microphone signal acquisition, added noise cancellation function + automatic gain control. Practical effect is better.   Tips:1. The power supply voltage must be 5V. Do not exceed 5V. Otherwise, the lamp board will be damaged. 2. Power supplies with currents greater than ..

Description:  Uses three color SMD LED, colorful, color flexible configuration, prefabricated a variety of color scheme, can set a color scheme specific to the color of each point, there are various design can choose, can adjust the brightness, the sensitivity adjustable, can set the inf..