rgb led controller Specification: Model YD-2-CK-XS03 Operating Voltage AC 100-240V Rated power 5W Product Size 236*135*45mm Output Port 8 Control Type SPI Signal Transmission Distance Up to 300 meters plus signal repeater Drive Capability 512 pixels per port Storage Mode SD Card, can store up to 256 programs Working Environment -20鈩儈55鈩? When choosing a controller(rgb led controller), what do you think is the most important? shape? compatibility? long-distance transmission? Synchronization performance? Or something else? Of course, these are also very important, but I think the most important thing should be stability. Using our rgb led controller. When you complete the project with the rgb led controller, power supply, and lamps, the project will be lit for 3 or 5 years or more. Time and labor costs are incurred because the rgb led controller is unstable and requires frequent maintenance of the controller. It provides a bad experience for people whose projects are forcibly suspended during the maintenance period. With the YD Sign rgb led controller, you don't have to worry about this issue at all. Our rgb led controller has been used in over 20000 lighting projects. The practice has proven that the stability of YD sign smart lighting control is very perfect. Controller low price website:http://www.ydsign.com/advertising-accessories/controller/