Technical Booklet R Access to and Use of Buildings·Page 51·6.5
Emergency assistance alarm signal requirements
Emergency assistance alarms must have a signal distinguishable from fire alarms and provide both visual and audible indication when activated.
An emergency assistance alarm provided in those locations referenced in paragraph 6.4 should have –
(a) a signal distinguishable from that of any installed fire alarm;
(b) a visual and an audible indication to confirm to the user that the emergency alarm has been activated; and
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet R - Access to and Use of Buildings.pdf