Y33A21136FPLFT is a sealed tactile switch from the KSA & KSL series designed for applications requiring reliable switching with environmental protection. The switch features IP60 sealing, SPST normally-open contact arrangement, and double overmolding on terminals with optional ground pin for enhanced durability and retention. It supports both top and side actuation with a large selection of interchangeable caps (K01 through K09), and offers multiple operating force options ranging from 1.3 N to 5.0 N with corresponding cycle life ratings from 100,000 to 1,000,000 operations. The device is RoHS compliant and designed for automatic or manual insertion with cambered terminals ensuring self-retention. Common applications include automotive, industrial control systems, and telecommunication networks where sealed, reliable switching is essential.