The Hikvision DS-PD1-MC-RS is an industrial-grade security sensor engineered to monitor the opening and closing of heavy rolling doors or shutter systems. Constructed with a durable aluminum alloy, the sensor is built to resist physical impact and harsh usage. A key feature of this model is the stainless steel armored cable, which protects the internal wiring from being crushed, cut, or damaged by the door's movement. It operates as a standard magnetic contact where the separation of the magnet (mounted on the door) and the sensor (mounted on the floor or frame) triggers an alarm signal. Its wide operating gap ensures reliable performance even if the door does not align perfectly every time. This sensor is an essential component for commercial and industrial security systems requiring robust perimeter protection for large entrance points.