There are many alerting devices for people with hearing loss that send signals by flashing lights, amplified sounds, and/or vibrations.
Below, I have provided links to a variety of devices that will make it easier to watch and enjoy television, wake on time, use the phone, provide home security, and attend movies, religious services, or lectures. There are also devises that will alert you to knocks on the door, or the sound of a crying baby.
Visual alarms are also available for driving. Your car can be equipped to alert you to emergency vehicle sirens, as well as to your own turn signals.
Click on the alerting device to see what products are currently on the market: