The AHD Varifocal lens camera employs 1/4" APTINA CMOS image sensor which provides greater image quality day and night. It uses advanced IR cut filter function in combination to the 1/4" APTINA CMOS sensor, which realizes 720P High Definition and high color reproduction for security camera. This enables clearer pictures at night time compare to traditional analog cameras. The built-in 42pcs IR Infrared LED provide the effective infra-red range up to 50m. The Built-in 2.8 MM - 12MM Manual Zoom Varifocal Lens allows you to adjust the angle of View to meet you need. It uses high quality Aluminum Alloy materials which can effectively prevent rust. The camera has adjustable bracket which can be easily mounted on wall or under ceiling. It is ideal for outdoor or indoor use.