This lovely KeyPad module comes with 9 push buttons. You can add your own mark into the button by simply remove the transparent hat.With this Keypad, your project will become easier to control.
This KeyPad module uses BUS for communication，so a 'chassis' is needed.
Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.