Catalog > Internet of Things (IOT) Related Products > More Platforms Catalog > Consumer Electronics > Kits > Various Kits 4X4 16Key Hex Tact Switch Keypad 4X4 16Key Hex Tact Switch Keypad HKD 4X4 16KEY TACT SWITCH KEYPAD 4X4 16KEY HEX TACT SWITCH KEYPAD. 0-9, F1-F4, * AND # 34.69 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview This is 4x4 16 button keypad matrix and The buttons are denoted by numbers and letters: 0,1, 2, 3, 4, 5, 6, 7, 8, 9, *, #, F1, F2, F3 ,F4, which can be used easily for many of your arduino and AVR project. Features Size: Approx.42mmX42mm