RGB LED Module (Arduino-Compatible) (2 Pack)These RGB LED modules with on-board current limiting resistors make for great status indicators. The LEDs are 5mm (T1-3/4) clear lens type mounted to a small breakout PCB.Specifications Voltage: 5 VDC Connection : 4 pin male header Pins: GND, RED, GREEN, BLUE Size: 0.95" x 0.63" x 0.63" (24 x 16 x 16 mm) Weight: 0.07 oz. (2 g)