4 ms·
I believe vibrating or very loud alarms are commonly used. http://www.amazon.co.uk/s/?ie=UTF8&keywords=alarm+clocks+for+the+deaf http://www.amazon.co.uk/s/?ie=
by andyjohnson0 13y ago
I believe vibrating or very loud alarms are commonly used.
http://www.amazon.co.uk/s/?ie=UTF8&keywords=alarm+clocks+for+the+deaf http://www.amazon.co.uk/s/?ie=UTF8&keywords=alarm+clocks+for...