Camera Resolution (Image Sensor): 5 Megapixel (5.0MP) for high-definition image output. Number of Channels: 4 Channels (4CH) to support connecting up to 4 surveillance cameras with the DVR device. Compression System (Video Compression): Advanced H.264 technology to reduce video file size while maintaining image quality. TV System (System): Supports PAL system (with NTSC option). Display Output (Video Output): Supports VGA output with a resolution of up to 1280x1024 pixels. Power Supply: Operates on DC 12V. ✨ Key Features: Live Mobile Monitoring: Supports remote monitoring via smartphone apps (iOS, Android, etc.) and Internet & 5G networks. Motion Detection and Alerts: Automatically records upon motion detection and sends security alerts. Night Vision (24 Hours / Night Vision): Equipped with infrared illumination (Infra-Red LED) for clear imaging during the night and 24 hours a day. Camera Control (PTZ Control): Supports controlling the rotation and zoom of compatible cameras (360 degrees). Backup Capability: Supports extracting and transferring recordings via USB port or the internet. Central Management System (CMS): Allows for managing and monitoring multiple DVR devices simultaneously via a computer using the Internet Explorer browser. Of course, they are new with all their accessories and the device, and have not been used at all.