This read-write INTEGER sets how long, in seconds from 2 to 60 with a default of 5, the identifying LED flash triggered by the stack-light command will run before automatically stopping, with 0 immediately returning all units to normal. An admin can extend this timeout when they need more time to physically walk to a rack and visually confirm which unit is flashing, or set it to 0 to immediately cancel an active LED-identification sequence. For example, if the default 5-second flash is not long enough to walk across a large data center floor, the admin raises this value to 60 seconds before triggering the stack light command again.