The 50K90-01-1-02N is a single-deck rotary switch manufactured by Grayhill, designed for reliable multi-position switching with a compact 0.5" diameter form factor and 200mA current rating. This switch features a 0.698" behind-panel depth and supports up to 4 poles on a single deck with up to 16 positions per switch, offering flexible configuration options. The switch provides choice of multiple angles of throw (22.5°, 30°, 36°, 45°, 60°, and 90°), PC or solder lug termination options, and positive shaft grounding for EMI/RFI shielding. An optional complete seal is available for PC board assembly and cleaning, ensuring durability in demanding environments. These switches are commonly used in industrial control panels, test equipment, and instrumentation where reliable contact switching and compact mounting are essential.