We use Wireless IP Cameras because of their options and versatility. The cameras we use have an SD Card slot so you can have recording locally inside the camera. The cameras can be programmed to send email notifications and snapshots per a schedule or selected interval. The cameras can be viewed remotely by computer, phone, or tablet. The cameras can be set for many formats, making them compatible with most NVRs and VMSs. They send secured wifi video 24/7 to the NVR if system equipped with one. The cameras can be remotely moved using pan/tilt function from devices.