Their website states:
Make ellumi™ work for you
*Continuous around the clock cleaning so you don't have to
*Built in dimmer switch so you control the amount of light
*Direct-Mount or Plug-in let's you choose the best installation for your home
*LED light provides energy savings which means more money in your pocket
How ellumi™ Works
University researchers have proven that specific wavelengths of light actually inhibit bacteria reproduction and destroy cells.
This is effective on Strep, Staph/MRSA, E. Coli, Salmonella and 18 other bacteria.
The light excites certain molecules in harmful microorganisms through photo-activation.
These molecules produce Reactive Oxygen Species (ROS), causing cell wall damage and death over time.
The units are available in four sizes and range in price from $100 to $200.
While the profile is a bit chunky, it can be hidden with the addition of a rail. And eventually, I am sure they will make a tape strip like most LED under-cabinet lighting available now.