(under subclass 502) Subject matter where an additional indication is provided after acknowledgement, indicating that the sensed condition is further changes (e.g., corrected, removed, or worsened).
(1) Note. The additional indication may be caused by an additional signal, or a return of the original signal to normal. However, for classification here, more than a mere inherent return of the indication to normal is necessary. Usually means is provided to reset the system to normal indication.
