Length (mm): 19Width (mm): 15Height (mm): 18Main Colour: BlackCountry of Manufacture: ChinaMPN: KY-011Minimum Operating Temperature: -40°CMaximum Operating Temperature: 85°CNumber of Items: 1Pin Pitch: 2.54mmMounting Hole Size: M2Mounting Dimensions: 10.5mmType: LEDColour: Red, GreenLED Diameter: 5mmLED Type: Bi-colourThis module is ideally suited to adding a slightly different light display to your project. This module lets you control a bi-colour red/green LED to display your information in a bold and bright way. This opens up all manner of possibilities from model rail road signals through to emotional eyes of a robot.Each colour of the LED is individually controlled to provide red or green depending on the higher voltage. A resistor will be required in most cases, the value of which can be found using ohms law. Voltage = Current x Resistance. We recommend starting with a 1K resistor with a 5V source on the ground pin of the module. Following which you can adjust to achieve the brightness you require.