KMR221GULCLFS is a microminiature surface mount tactile switch from the KMR 2 Series, designed for momentary action with a single pole single throw (SPST) normally open contact arrangement. It features an operating force of 2.0 N (200 grams) ± 0.50, a travel distance of 0.25 mm ± 0.1, and an operating life of 200,000 cycles. The switch includes a ground pin option (G), ultra low current capability (ULC) with minimum current of 1 µA at 1.8 VDC, and gullwing terminals for SMT mounting. With gold contact material, it supports a maximum voltage of 32 VDC, maximum current of 10 mA, and operates over a temperature range of -40°C to 125°C. This switch is ideal for automotive, industrial electronics, and medical equipment applications where compact size and reliable tactile feedback are required.