This LCD Display Shield gives you a nicely mounted 1602 LCD Display snaps right on top of your Arduino UNO. With onboard buttons for easy navigation including up, down, left, right, select and reset, using your Arduino away from a computer was never easier. Use this shield to display values read in by your Arduino, display options for user inputs, choose between different programs you can run on your Arduino, etc. With a Power LED onboard and a nice blue backlit display, you'll be able to use your Arduino's LCD Display Shield day or night. Operating Voltage: 5V 16x2 LCD Character Display Blue back light with white characters With a contrast adjust potentiometer Uses the 4-Bit Arduino LCD Library 6 Push Buttons to interface with or control your Arduino Industry Standard HD44780 Controller Pin used: D4-D7 -> LCD Data transmission D8 -> Register Select D9 -> Enable pin D10 -> Backlight control Expanded available I/O pins Built for Arduino UNO