King Yao Lighting Factory LED module refers to a light emitting diode (LED) current limiting resistor soldered onto a certain size PCB, with DC12V / 24V power supply can pick up light electronic devices; LED module is mainly used for production of LED signs, luminous characters, and so on. External light source LED module is generally used plastic characters, within a point light source, waterproof LED modules are also ideal for large-scale metal words, if the word tin outside light source lamp nine red, green and blue tricolor waterproof module , coupled to the controller can be colorful changes, you can have bright colors the word change.