The CPG1511F01S04 is a tactile switch with through-hole installation and RoHS certification manufactured by Kailh. The tactile switch is composed of two separate parts, a metal contact and a plastic actuator, and is used to detect physical contact between two sections of a circuit. Its features include long-life expectancy, secure locking, low profile for slim design applications, and wide variety of choices in travel distances and switch force values. The CPG1511F01S04 is compatible with both through-hole and surface mount technology. This tactile switch is ideal for use in a variety of electronics applications, from mobile phones to automation control systems.