This Touch Free button applies NoTouch® technology which helps eliminate the spread of germs in medical facilities or high traffic areas. To exit, a person must simply wave their hand in front of the device. The infrared will pick up the motion and unlatch the time adjustable door.Universal Touch Free Button offers many different combinations for the price of a standard one configuration button. Eliminating the need to stock dozens of push buttons, and wasting precious time and money tracking down just the right button for a customer. UB-1TF is ready to be assembled out of box and is easily installed within minutes right on site.The faceplate is constructed of cast aluminum metal, allowing it to take tough knocks in stride, and is slightly oversized to cover old plate installation marks. Button package includes: faceplate, three illuminated push buttons and seven changeable illuminated activation messages.HOW IT WORKS The installer simply has to choose which lens cover and interchangeable message plate works best for the customers need, and easily snap them in place. This allows the button to be mounted in a matter of minutes instead of waiting weeks for a specific button to be ordered and delivered.