(under subclass 691.1) Subject matter where the system provides more than one humanly perceptible indication in response to a single condition.
(1) Note. For example, multiple alarms in different rooms of a dwelling, each responsive to events such as intrusion or fire being sensed at any point in the dwelling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
326+, for a generic indicating system having plural concurrent single indications.
691.3, for a condition responsive indicating with multiple discrete human perceptible signals generated in different stages or levels.