For homes, an offer *4 IP surveillance cameras, 8 mega-pixel* *NVR device 4 channels* *2 Tera Hard Drive* *40 meter cable* _Installation included_ Price - + Intercom with selection, definitely 50 meters A doorbell and camera microphone device An internal display screen for the image, microphone, and external door opening button, in addition to a lock system for one door + Alarm device for the door, motion sensor Amazing price.