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, saving time and effort. The high-quality material shell helps prevent internal corrosion or damage from water or other elements. Good stability: The outdoor photoelectric switch operates at a standard voltage of 120V~277V. Wide voltage design ensures stable performance, resists interference and delay, and includes protection circuits. Suitable for outdoor use in parks, streets, parking lots, sidewalks, and similar areas. Easy to install: The outdoor photoelectric lighting has a twist-lock design for simple removal and installation. The standard plug fits most standard twist-lock sockets. This package includes 3 units, sufficient for multiple applications. Delay function: The dusk-to-dawn sensor works with standard twist-lock sockets and is compatible with barn or pole lights. It features a built-in 5-second delay to prevent false triggering from car headlights, lightning, or other temporary light sources. Heat resistance: Compared to traditional thermal photoelectric tubes, this twist-type photoelectric sensor has a repeatable set point, does not generate heat, maintains normal operating temperature, and will not discolor over its service life. It also offers faster response times, handles current surges well, and is compatible with LED lighting. Material: ABS Color: Black + Blue Package Contents: 3 x Sensor Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowance is +/- 1-3 cm.