Besides very cool, Glow Mates are the world’s first nightlights that fit onto almost any doorknob! They act as a normal nightlight that will stay on for 5 minutes before gently fading out. You can also initiate a colorful light show that will stay on for several minutes. But the most unique feature is the sound activated light. When your Glow Mate detects any sound above 85 db if will automatically begin blinking. Any sound such as a child crying or a smoke alarm, will trigger the Glow Mate and provide a lighted path to the bedroom door.