Know when a rack door changes state without relying on visual checks. Eaton 103005781 door contact sensor provides a direct open/close signal for use with Eaton environmental rack monitoring, giving infrastructure teams immediate visibility into cabinet access events. That matters in spaces where every opening can affect security, airflow, or operational continuity. By tying door status into the monitoring stack, the sensor helps teams correlate access events with temperature, humidity, or alarm conditions and respond faster when something changes. It is a practical fit for data closets, network racks, and other controlled enclosures where access needs to be observed, not assumed. For organizations protecting equipment and uptime, a door contact sensor adds a low-profile layer of accountability. It supports cleaner incident review, better environmental awareness, and more disciplined rack management without adding complexity at the cabinet itself.