[Automatically On and Off]- Photocell sensor was built in, the IR illuminator automatically switch on at dusk and switch off at dawn, its energy saving style. Wave length 850nm Infrared light, improves compatible camera image quality in low-light situations and in complete darkness, they will works well with most of IP cameras and analog cameras, such as Arlo, Blink or other brand cameras., [Premimum Structure and Materials]- Use EPISTAR LED light source, heavy duty aluminum housing and thick heat sink, reinforced glass window, stainless steel screws, Its good for both indoor and outdoor use. The waterproof level is IP66 [Installation]- Please install the IR light beside the camera and point the same direction as your camera. Please make sure that your camera works well with 850nm ir light before ordering. Youll get full package includes infrared illuminator, 12V/1A adapter, installing screws and user manual [90 Degree Wide Angle]- Its real wide ang