Using RGB color technology, PSE Series Piezo Switches and MCS 30 Mechanical Switch each offer 7 ring illumination colors. Multicolor illumination is powered by integrated power supply that accepts input voltage of 5–28 Vdc, and constant brightness intensity is maintained regardless of applied voltage. PSE Series, offered in 22, 24, 27, and 30 mm diameters, has IP69K rating and no moving actuator. MCS 30 comes in 30 mm diameter and uses tactile switch that provides clear haptic feedback.