The 1A09 is a rocker-action pushbutton cap designed for APEM's multimec 5G series switches, featuring a rectangular form factor with dimensions of 12.5 mm × 10.1 mm and a height of 12.2 mm. Constructed from ABS/polycarbonate material, the cap operates reliably across a temperature range of -40°C to +65°C for solid versions, providing durable performance in industrial control applications. The cap is compatible with both through-hole (TH9) and surface mount (SH9) configurations, with available actuation forces of 20 N, 35 N, and 65 N, and supports multiple LED color options including blue, green, yellow, white, and red. The 1A09 is commonly used in control panels, instrumentation, and equipment requiring tactile feedback and visual indication through integrated illumination.