SeaDog 403060 Stainless 12/24V Multi Color LED Continuous Adjustment Memory Function Dimmer Switch w/On-Off FunctionLED Continuous Adjustment Dimmer Switch is constructed of 304 stainless steel and features easy to use color coded dimming levels. When off, the LED ring is orange; maximum bright, the ring is green; lowest light level, the ring is purple; and in between stages are shades of blue. A short press turns the light on and off, then a longer press activates the dimming brightening function. Memory function turns the light back on at the same brightness