The 4FSH942 is a surface-mount (SMD) illuminated switch from the Illumec™ 4F series, designed for momentary, normally open (NO) operation with an integrated yellow LED. This switch is sealed to IP67 standards, ensuring protection against dust and water ingress, and operates reliably across a temperature range of -30°C to +85°C. It features a mechanical lifetime of over 10 million cycles and a standard actuation force of 3.5N. With its compact 10 x 10 mm size and robust design, the 4FSH942 is suitable for various PCB-mounted user interface applications requiring durable, tactile, and visual feedback.