Instruction for GEMFAN LED 08 and GEMFAN LED 20: 1. It uses small outline package. 2. Using side-emitting LED lights, the light panel can achieve light emission from both sides. 3. It can be connected insert directly or weld. Features: LED 08: The design highlight is edge-emitting light. It can light up from top and below by installing one light board on the side of the arm. So that, it can reach a good lighting effects with less weight and board quantity. LED 20: It intergate large amount of lamp beads under small size. If drone crashing, the FC won鈥檛 have a short circuit because of 1A fuse in it. When we face some race rules such as 32 lamp beads and 3 luminous surfaces, we just need 2 LED 20. If that, the drone will be high efficicency and light weight. LED CU: The LED CU has small size, light weight and easy-installation. Its max electric current is 2A, and support WS2812B. U can change color by short press. Specifications: GEMFAN LED 08 VIN: 5V Size: 35mm*5mm*4.1mm Weight: 0.8g/PCS Wire Length: 150mm GEMFAN LED 20 VIN: 5V Size: 40mm*6.5mm*3.6mm Weight: 1.1g/PCS Wire Length: 80mm GEMFAN LED CU Supply Voltage: 6v-28v(2s-6s) Size: 2.3mm*17.5mm*8.6mm Weight: 2.7g LED Funciton-button: Short press to change the color of LED(Green,Red,Blue,Yellow,Off) Package Included: GEMFAN LED 08 4*GEMFANLED 08 Light Board 4*150mm power cable GEMFAN LED 20 4*GEMFAN LED20 Light Board 4*80mm Power Cable GEMFAN LED CU 1* GEMFAN LED CU Controller