Here's what this description means:

2 Keys: This keyboard kit contains two keys or buttons. You can use these keys for various purposes, such as simple input, hotkeys, or shortcuts in your DIY project.

Membrane Switch: The keys on this keyboard are likely membrane switches. Membrane switches are known for their durability and reliability. They consist of layers of flexible material with printed circuits that make electrical contact when a key is pressed.

DIY Keyboard: "DIY" stands for "Do It Yourself." In this context, it means that the keyboard comes as a kit or set of components that you need to assemble yourself. Building such a keyboard can be a fun and educational activity for hobbyists and enthusiasts who want to create their own custom input device.

Red and Yellow Color Buttons: The keys on this keyboard have distinct red and yellow color buttons. This color differentiation can be useful for visual identification or organization within your DIY project.