Built-in human infrared sensor module with light effects and delay switch functionality. Features high load capacity and strong anti-jamming capability. Automatically turns on when a person enters the sensing range and delays off after leaving. Can automatically detect day and night conditions; operation starts based on external illuminance levels, working automatically at night and remaining off during the day. Users can adjust settings according to local conditions. Light duration is adjustable from 15 seconds to 7 minutes. Color: Black Detection Range: 180 degrees Operating Voltage: DC 12V Detection Distance: 15m (at 24°C) Delay Time: 15 seconds to 7 minutes Installation Height: 1.8m - 2.5m Material: ABS Installation Type: Open style with 16mm hole mounting; single-button adjustment Package Includes: 4 x 12V Human Infrared Sensor Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm.