Check the listing for details. WS2812B RGB LED Module String Panel Pre-soldered on Heatsink with 9cm Wire 50PCS. Color: Multicolor, Condition: New. Listed at 9.38 USD. 50leds/string WS2812B Pre-Soldered Leds String DC5V LED Module Individually Addressable DESCRIPTION Product Specification: Model: Pre-wired ws2812b moduleLED source:SMD 5050 RGBMaterial:Aluminum plateIC Model: WS2812BGray level: 256Beam angle: 120 DegreePower:0.3W plusmn 0.01%Input Voltage:DC5VWave length(NM):R-650mcd, G-520mcd,B-460mcdLife Span:>50,000hrsProtection Rate: Non-Waterproofcable length :about 5meter / stripLED Quantity: 50LED/strip,50Pixel/stripSignal: WS2812 chipDimension about:10cm wire between ledsWarranty: 2 YearWorking Tempreture: -20~50degProduct Description: WS2812B is a intelligent control LED light source that the control circuit and RGB chip are integrated in a package of 5050 components. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit. Also include a precision internal oscillator and a 12V voltage programmable constant curre-nt control part, effectively ensuring the pixel point light color height consistent.Product Features and Benefits: 1. Intelligent reverse connect protection, the power supply reverse connection does not damage the IC.2.The control circuit and the LED share the only power source.3.Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel point.4.Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate.5.Built-in electric reset circuit and power lost reset circuit.6.Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency not less than 400Hz/s.7. Cascading port transmission signal by single line.8.Any two point the distance more than 5m transmission signal without any increase circuit.9.When the refresh rate is 30fps, cascade number are not less than1024 points.10.Send data at speeds of 800Kbps.11. The color of the light were highly consistent, cost-effective.Applications: Full-color module, Full color soft lights a lamp strip.LED decorative lighting,Indoor/outdoor LED video irregular screen.Package included: WS2812B Pre-soldered LED module