The 87AB3-201 is a 12-button matrix keypad module featuring a snap-dome contact system designed for reliable, tactile button actuation with audible feedback. The module maintains 0.5-inch button center spacing and employs a low-profile design with individual metal snap-dome switches under each button. It supports up to 3,000,000 operations per button, ensuring long-term durability in industrial and commercial applications. The keypad is available with customizable legends through insertable modules, printed legends, or dry-transfer options, allowing flexible configuration for prototypes and production quantities. Common applications include industrial control panels, telecommunications equipment, and consumer electronics where reliable, modular input interfaces are required.