That hadn't occurred to us - that if you note the sound level is too high, rather than just ratting out your kids, the Guardian might be letting you know the child's hearing is already impaired, rather than that he or she is damaging his hearing.Hamilton Electronics, a leader in electronics for the education market since 1933, is now introducing The Guardian Wired Headphone with SLM (Sound Level Monitor) technology. The Guardian has green and red LED lights so parents can visually monitor listening levels. A green light indicates a safe listening volume and a red light indicates that the sound is too high - alerting parents that the child may have a hearing problem or is at risk of causing irreversible damage to their ears.
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