The 82-301-61 is a lightable 3-button SPST modular keyboard module from Grayhill's Series 82 line, designed for custom keyboard applications with consistent 11/16" button center spacing. The module features long-stroke wiping contacts with a contact resistance of 25 milliohms or less, rated for 100 milliamps at 5 Vdc, and supports 1,000,000 operations with contact bounce of 10 milliseconds or less. Dimensions include a module width of 2.057 inches (52.25 mm) and button spacing of 0.687 inches (17.45 mm), with mounting holes accommodating 0.032 inch diameter pins on a circuit board 1/16" to 1/8" thick. The module operates over a temperature range of -40°C to 80°C and features ABS plastic housing with gold-plated brass and copper alloy contacts. This lightable configuration is ideal for applications requiring illuminated keypads in control panels, telecommunications equipment, and industrial instrumentation where modular stacking and consistent button geometry are essential.