Touch Metal Piezo Switch, 27mm mounting diameter,27×1.5mm thread, 31mm recessed actuation area, ring illuminated with multi-color RGB LEDs (12 or 24V). Metal housings are milled, one piece construction and mounted with a nut. Aluminum housings are available in Silver, Red, Black, Green, Gold or Blue anodization. IP rating IP69K Electrical specs 0-24V AC / DC Operating temperature -20C to +70C