Automatic switch on and off: The photoelectric light sensor features an automatic illumination detection circuit that turns the light off during the day and on at night, providing convenience and energy efficiency. The high-quality material housing helps protect against water and external damage. Good stability: Designed for outdoor use, this photoelectric switch operates at a standard voltage of 120V–277V. Wide-voltage compatibility ensures stable performance, resistance to interference, and reliable operation. Built-in protection circuits make it suitable for use in parks, streets, parking lots, sidewalks, and other outdoor areas. Easy to install: The outdoor photoelectric lighting sensor has a twist-lock design for quick installation and removal. The standard plug fits most common twist-lock sockets. This package includes 3 sensors, sufficient for multiple applications. Delay function: The dusk-to-dawn sensor works with standard twist-lock fixtures and is compatible with barn lights, pole lights, and similar applications. It includes a built-in 5-second delay to prevent false triggering from temporary light sources such as car headlights or lightning. Heat resistance: Compared to traditional thermal photoelectric sensors, this model generates no heat during operation, maintains a consistent temperature, and does not discolor over time. It offers faster response times, handles higher currents, and is fully compatible with LED lighting systems. Material: ABS Color: Black + Blue Package Contents: 3 x Sensor Note: Light reflections and display settings may cause slight variations between the product color shown and the actual color. Measurement may vary by +/- 1-3 cm.