The HIKVISION DS-7604NI-K1 NVR 4 Channel is a high-performance network video recorder that provides advanced features for professional video surveillance. It is designed to record and store high-quality video streams from up to 4 network cameras, making it ideal for small to medium-sized businesses and homes.

Features:
- 4-channel network video recorder
- Supports up to 4 IP cameras with up to 8 Megapixels resolution
- H.265+/H.265/H.264+/H.264/MPEG4 video formats
- HDMI and VGA video outputs for live view and playback
- Up to 2 SATA hard drives with a maximum of 6TB capacity per drive
- Supports RAID 0, 1, 5, and 10 for enhanced data security
- Dual Gigabit network interfaces with PoE support
- Intelligent video analysis including line crossing, intrusion detection, and object removal detection
- Alarm input and output for external alarm devices
- Remote access through the web browser, HIK-Connect app, and iVMS-4200 software

Specifications:
- Operating System: Embedded Linux
- Video Input: 4-ch
- Supported Camera Types: IP
- Video Compression: H.265+/H.265/H.264+/H.264/MPEG4
- Video Output: 1 HDMI, 1 VGA
- Recording Resolution: Up to 8MP
- Recording Frame Rate: Up to 25fps per channel
- Audio Input/Output: 1-ch RCA/1-ch RCA
- Playback Resolution: Up to 8MP
- Playback Frame Rate: Up to 25fps per channel
- Hard Disk Interface: 2 SATA interfaces, up to 6TB capacity per HDD
- Network Interface: 2 RJ-45 10/100/1000Mbps self-adaptive Ethernet interfaces
- PoE: 4 independent 100Mbps PoE network interfaces
- USB Interface: 2 x USB 2.0
- Power Supply: 12V DC
- Power Consumption: ≤ 10W (without hard disk)
- Working Temperature: -10°C to +55°C
- Dimensions: 315 × 240 × 48 mm
- Weight: ≤ 2 kg

The HIKVISION DS-7604NI-K1 NVR 4 Channel is a reliable and efficient solution for network video recording and surveillance. With its advanced features and user-friendly interface, it provides high-quality video recording and playback for enhanced security and monitoring.