This is a very popular LCD Keypad shield for Arduino and other variants. It includes a 2×16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Just one Analog Pin 0 is used to read the five pushbuttons. The LCD shield supports contrast adjustment and back-lit on/off functions. It also exposes five analog pins with DF Robot color code for easy analog sensor plugging and display. The on board LED indicates power on.    Operating Voltage: 5V    5 Push buttons to supply a custom menu control panel    RST button for resetting arduino program    Integrate a potentiometer for adjusting the backlight    Pin used:D4-D7    -> LCD Data transmission    D 8   -> Register Select    D 9   -> Enable pin    D 10 -> Backlight control    Expanded available I/O pins    Expanded Analog Pin out with standard DF Robot configuration for fast sensor extension    Dimension: 80 x 58 mm (3.15x 2.28 in)This is a very popular LCD Keypad shield for Arduino and other variants. It includes a 2×16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Just one Analog Pin 0 is used to read the five pushbuttons. The LCD shield supports contrast adjustment and back-lit on/off functions. It also exposes five analog pins with DF Robot color code for easy analog sensor plugging and display. The on board LED indicates power on.    Operating Voltage: 5V    5 Push buttons to supply a custom menu control panel    RST button for resetting arduino program    Integrate a potentiometer for adjusting the backlight    Pin used:D4-D7    -> LCD Data transmission    D 8   -> Register Select    D 9   -> Enable pin    D 10 -> Backlight control    Expanded available I/O pins    Expanded Analog Pin out with standard DF Robot configuration for fast sensor extension    Dimension: 80 x 58 mm (3.15x 2.28 in)This is a very popular LCD Keypad shield for Arduino and other variants. It includes a 2×16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Just one Analog Pin 0 is used to read the five pushbuttons. The LCD shield supports contrast adjustment and back-lit on/off functions. It also exposes five analog pins with DF Robot color code for easy analog sensor plugging and display. The on board LED indicates power on.    Operating Voltage: 5V    5 Push buttons to supply a custom menu control panel    RST button for resetting arduino program    Integrate a potentiometer for adjusting the backlight    Pin used:D4-D7    -> LCD Data transmission    D 8   -> Register Select    D 9   -> Enable pin    D 10 -> Backlight control    Expanded available I/O pins    Expanded Analog Pin out with standard DF Robot configuration for fast sensor extension    Dimension: 80 x 58 mm (3.15x 2.28 in)