Alarm

<node>/alarm/<code>[/<component>]

Examples:

45fe/alarm/tlc.hardware.error   # serious hardware error (for main component) on node 45fe
45fe/alarm/tlc.301/dl/7    # A0301 serious detector error for component dl.7 on node 45fe

For example, a traffic light bb35 that has a hardware error in detector logic 4 might publish to: bb35/alarm/tlc.hardware.error/dl/4

Subscribing

Supervisors can subscribe to all alarms from a specific device: 45fe/alarm/#

Or all alarms within a region (assuming fixed prefix depth): +/alarm/#