Matrix Keyboard Module 4×4 Large

From the shop's description

Product Description These are great keyboard modules that are used for single chip microcontroller. 4*4 button design, total 16 buttons on one keyboard module. Small size, save space, convenient to use and connect.Can be connected to any microcontroller. These are great choice for external keyboards of microcontroller.Suitable for any Aduino project that requires a keyboard connection. Four mounting holes on each corner.Easy to install. Specification: Size : 76 x 82 x 17 mm (L x W x H) Button: 16 Material: ABS Color: shown as picture Package List: 1 * Matrix Keyboard Module 4×4