The IPR3SAD2104 is an illuminated round pushbutton switch designed for harsh environments with a 12 mm bushing diameter and momentary operation. It features a curved round actuator with a flat design, normally open (NO) electrical function, and solder lug terminals with silver gold-plated contacts rated for 100 mA at 30 VDC. The switch is sealed to IP67 and IP69K standards, offers tactile feedback with a typical operating force of 6 N ± 2 N, and supports multiple LED color options including super red, yellow, green, blue, and white with 20 mA forward current. With a mechanical life of 1,000,000 cycles, low contact resistance of 100 mO maximum, and dielectric strength of 1,500 Vrms, this switch is ideal for industrial control panels, emergency stop systems, and other demanding applications requiring reliable illuminated feedback in harsh conditions.