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A Photocell Sensor automatically controls outdoor lighting by detecting ambient daylight and switching connected lights ON at dusk and OFF at dawn, eliminating the need for manual operation. Esysense offers reliable LDR-based Photocell Sensors, including the ESY-LDO4-PT, ESY-LD04-PT, and ESY-LD02, with IP44 and IP65 weatherproof protection, 10A and 16A load capacities, and 5–50 Lux sensitivity. Ideal for street lights, garden lighting, parking areas, pathways, industrial premises, and security lighting, these sensors improve energy efficiency, reduce electricity costs, and provide dependable year-round dusk-to-dawn automation, making outdoor lighting safer, smarter, and more convenient.