Which observation helps to find the cause? · Company hall
Fixing a malfunction focuses on alarm zones, camera coverage, time synchronization and verification. Note when the problem started, which components were affected, and what changed shortly before that. Check the chain in sections and record where the operation is still present. Repeat the situation in which the error occurred after repair; a restart alone without a follow-up test provides insufficient certainty. We complete the check against a test event whose alarm and associated image are found by the authorized user.

