AHD CCTV is an analog high definition CCTV standard that uses coax cable to transmit HD video from security cameras to DVRs. AHD supports 720p and 1080p resolutions.
IP CCTV
IP CCTV systems seamlessly link cameras, control stations and NVRs together on a network. Connections are made over a network. It can be integrated with any network.
Varifocal CCTV
Equipped with a vari-focal lens, that means its focal length can be adjusted anywhere between its designated range. The Focal Length determines the field of vision.