Ive never seen one myself. I replaced mine (a lutron) with a standard lutron fan-switch then simply use the motion/humidity sensor in the bath to control it. So if humidity in the bathroom rises above 58% the fan turns off until it's down at 55%. If at any time the switch is pushed that rule is cancelled but will turn off 5 mins after motion is no longer detected. A fan is for moisture not getting the smells out so it works well. Though we have ultra silent fans in our bathrooms so no covering up the sounds in the morning after binging on tacobell the night before while moaning in agony begging for it to stop like montezuma has personally invaded your digestive track and is making himself at home for the duration...
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