Automatic switch on and off: The photoelectric light sensor features an automatic illumination detection circuit that turns the light off during daylight 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 design ensures stable performance, resists interference and delay, and includes pattern protection circuits. Suitable for parks, streets, parking lots, sidewalks, and other outdoor areas. Easy to install: Features a twist-lock design for quick and secure installation. Compatible with most standard twist-lock sockets. This package includes 3 sensors, ideal for multiple applications. Delay function: The dusk-to-dawn sensor works with standard twist-lock fixtures and is suitable for barn lights, pole lights, and similar applications. Built-in 5-second delay function helps prevent false triggers from temporary light sources such as car headlights or lightning. Heat resistance: Compared to traditional thermal photoelectric sensors, this model generates no heat, maintains consistent temperature, and does not discolor over time. Offers fast response times, handles high currents, and is compatible with LED lighting systems. Material: ABS Color: Black + Blue Package Contents: 3 x Sensor Note: Light reflection and display differences may cause slight variations between the product color in images and the actual item. Measurement may vary by +/- 1-3 cm.