This read-write integer from 10 to 1000 sets the maximum number of events the ComController retains in its event log, defaulting to 200, with the description noting the practical upper limit depends on available memory and that 1000 is being used as the current ceiling. An admin tunes this to balance how much event history is available for post-incident review against how much of the device's limited memory that history consumes. For example, an operator investigating a hard-to-reproduce intermittent issue might raise hcxEventLogSize toward 1000 temporarily so more history is retained across the sporadic events, then lower it back afterward.