RS-485 Half duplex, HIKVISION, Pelco-P, Pelco-D, self-adaptive.Network Interface 1 RJ45 10 M/100 M Ethernet Interface, Hi-PoE.Audio Output 1-ch audio output, line level, impedance: 600 Ω.Audio Input 1-ch audio input, 2 to 2.4 V, 1 KΩ ± 10%.BNC 1.0 V /75 Ω, NTSC (or PAL) composite, BNC.
Network Storage Built-in memory card slot, support Micro SD/SDHC/SDXC, up to 256 GB NAS (NFS, SMB/ CIFS), ANR.Image Enhancement HLC, BLC, 3D DNR, Optical Defog, Regional Exposure, Regional Focus.Focal Length 4.8 mm to 120 mm, 25× Optical.Working Distance 10 mm to 1500 mm (wide-tele).FOV Horizontal field of view: 58.2° to 3.2° (wide-tele),Vertical field of view: 32.7° to 1.8° (wide-tele),Diagonal field of view: 66.8° to 3.7° (wide-tele).