LCD Keypad Shield input and output expansion board used with a 2-line 16-character LCD. The LCD features a contrast adjustment and backlight. A five key input, an analog port, and a reset button.

The unused IO port expansion out spare makes full use of the IO port. 

Occupancy digital port: PIN4 (DB4), 5 (DB5), 6 (DB6), 7 (DB7), 8 (RS), 9 (E), 10 (backlight control), the analog button port A0. This board is used in conjunction with Arduino:

Quick Details:
Model Number: LCD1602 Keypad Shield for ARDUINO
Type: Drive IC
Supply Voltage: 1.5V-6V
Dissipation Power: 1W-6W
Operating Temperature: -40C ~ 125C
Lead Free Status: Lead free / RoHS Compliant
Maximum Operating Temperature: -40C ~ 125C