Hamilton Electronics has been making electronic devices for use in our nation’s schools since 1933. Today they have announced a new set of headphones called the Guardian that has green and red LED lights on them.

When the green LED is lit parents and teachers know that the volume levels are safe for the students hearing. When the red LED is lit, that means that the volume levels are too high.

Hearing protection starts at a young age with all the loud music, movies and video games kids are exposed to. The Guardian headphones provide a way to monitor sound levels. The headphones are available now for a MSRP of $39.95.