The ZB4BW343 is a head for a 22mm illuminated push-button from the Harmony XB4 range, designed for use with a universal LED. It features a round, red flush profile with a spring-return operator, an unmarked plain lens, and a durable chromium-plated metal bezel. This component is built for high durability with a mechanical lifespan of 10,000,000 cycles and is rated for operation in a wide temperature range from -40°C to 70°C. Designed for harsh environments, it offers high resistance to pressure washing and provides IP66, IP67, IP69, and IP69K protection, as well as an IK06 impact resistance rating. Its robust construction makes it ideal for industrial control panels and machinery applications requiring reliable, long-lasting user interface components.