This 4x4 keypad module has a total 16 different push button keys and comes in 4x4 matrix. The keypad comes in stripped form connectors which can directly be attached to the respective microcontroller development board.
Specifications:
4 x 4 Matrix Microswitch Push Button Keypad
8 pin configuration
Operation Temperature: -20 to +80 centigrade
A Female 10-pin berg strip connector is required for interfacing it with your microcontroller circuits.