The K2-6645SP-S4SC-04 with Tactile Switches SMD RoHS is a surface-mount mini-mechanical switch designed for use in a wide range of electronic components. It is produced by HRO Parts and is compliant with the Restriction of Hazardous Substances Directive, otherwise known as RoHS. It features a very durable and tactile switching response, making it an ideal choice for applications that require responsive and reliable switching, such as navigation and input devices. The unit also features a long operating life of up to 1,000,000 cycles, ensuring it lasts for many uses. Additionally, the switch is also resistant to dust, dirt, and moisture, making it suitable for both indoor and outdoor applications.