Built-human infrared sensor module, sensor module light effects, delay switch module.load capacity, strong anti-jamming capability.people into the sensing range, can be automatically opened, after leaving the automatic delay off,can automatically identify day and night, and the external environment illuminance can freely choose the starting job,Automatic work to do in the evening, during the day and closed. Users can adjust light time is adjustable and can be adjusted by the user according to local conditions.Color: BlackDetection range: 180degreeOperating voltage: DC12VDetection distance: 15m (24 Degrees Celsius)Delay Time: 15 seconds to 7 minutesInstallation height: 1.8m-2.5mMaterial: ABSInstallation: open type, (hole 16mm) installation, adjusting for the next button.Package includes:4 x 12V human infrared sensorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.