The BC-4-IR-D from MOBOTIX uses a 1/3" progressive scan CMOS sensor to capture 2688 x 1512 resolution video at 30 fps. A single IR LED provides up to 131' of illumination in low-light conditions. The camera's 9-22mm motorized varifocal lens delivers a 35 to 15° horizontal field of view. Two-way audio communication is possible thanks to an audio input and output. An onboard memory card slot supports microSD/SDHC/SDXC cards up to 128GB (available separately). Integrated PoE technology simplifies connectivity by transferring power and data over one cable.