About this resource:
describing how and why deaf people use vibrating devices to alert them to alarms or information, or have flashing lights for the door, phone, alarm clock, baby cry alarm and other systems
About this record:
http://rdf.australiancurriculum.edu.au/elements/2018/05/8c7d179d-46a8-4d0a-94b2-7043c3d7fc53.rdf