Having an on-screen operation and activity display allows a user to understand the status of the product and control it by sight alone. This is a useful feature for people who have a hearing loss.
On-screen operation and activity display addresses:
1193.41(d) Operable without hearing.
Product Types that generically include an on-screen operation and activity display:
Caller ID displays.
Fax machines.
Pagers.
Videotelephones.
Note: all wireless telephones have visual displays that guide the user through their operation and status, but this feature is often incomplete and requires hearing for full control.
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