Apart from Office Zeat all our systems have video recording, security PTZ cameras. These detect any movement so also function as a wireless doorbell. We only use the very best Sony or Lenovo recording cards. No cheap rubbish. The cameras all have pan and tilt, motion detection, zooming and tracking and give a warning alert to your phone as well. Up to 6 people can view the cameras at the same time. One camera at the front and one at the rear of your home for total protection. They can record to Cloud Recording Services if you wish. They are protected behind very tough polycarbonate anti-tamper, anti-theft shields.