VIVOTEK’s CD8371-HNVF2/HNTV is a vandal-proof network camera specifically designed for prisons and correctional facilities. With up to 20fps at 3-Megapixel resolution, 940nm IR illuminators, two-way audio and available in either fixed lens (-HNVF2) or vari-focal (-HNTV). The CD8371-HNVF2/HNTV is the most feature rich prison cell surveillance camera available today. The CD8371-HNVF2/HNTV has an anti-ligature design to limit the possibilities of self-inflicted harm or suicide, a required feature for environments like prisons, holding cells, psychiatric wards, mental hospitals and correctional institutions.