Dahua Technology N42B2P 8-Channel 8MP Security NVR (No HDD)


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Dahua Technology Lite Overview

Record from and manage up to 8 cameras with the N42B2P Lite Series 8-Channel 8MP NVR (No HDD) from Dahua Technology at resolutions up to 3840 x 2160. Equipped with two SATA ports, the NVR can be configured to have an internal storage of up to 8TB (HDDs available separately). H.265, H.264, and MJPEG compressions keep file sizes manageable while maintaining the best quality possible. Two-way audio is possible thanks to an audio input and output.

This NVR supports simultaneous HDMI and VGA outputs, as well as up to 128 users. ONVIF-compliance for version 2.4 enables interoperability when combined with 4K cameras.Embedded quad-core processor and Linux OSHDMI and VGA simultaneous video output10/100/1000M Ethernet port8 x PoE portsSupports Automatic Network Replenishment (ANR) technologySupports network cameras from Dahua, Arecont Vision, Axis Communications, Bosch, Brickcom, Canon, CP Plus, DynaColor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videotec, Vivotek, and othersSmart Add functionality enables the NVR to automatically detect and list IP cameras, simplifying the process of adding cameras to the NVRIVS (intelligent video system) recording for standard intelligence at-the-edge features, premium features to detect motion, tripwire and intrusion violations, and abandoned or missing objects, and advanced features for facial detection, people counting, and heat mappingHeat Map advanced IVS feature highlights areas with the highest concentration of people, and the data can be exported into a customized report to aid in business or forensic analysisAlarm inputs for 4 channelsTrigger events include recording, PTZ, tour, alarm out, video push, email, FTP, snapshot, buzzer, and screen tipsVideo detection includes motion detection, video loss, and tamperingOSD for camera title, time, video loss, camera lock, motion detection, and recording16 kb/s to 20 Mb/s bit rate per channelDewarping mode corrects distortion in circular panoramic views from fisheye lenses1 x USB 3.0 port & 1 x USB 2.0 portBackup via USB device and networkUp to 128 usersSupports iOS and Android mobile devices1 RU rack-mountableOptional PFH101 rackmount tray available separately

Dahua Technology Lite Specs


Main Processor Embedded quad-core processor
Operating System Embedded Linux

Video & Audio

IP Camera Inputs 8 channels
Audio 1 x RCA, 1-channel input
1 x RCA, 1-channel output


Interface 1 x HDMI
1 x VGA
Resolutions 3840 x 2160
1920 x 1080
1280 x 1024
1280 x 720
1024 x 768
Decoding Maximum Decoding:
2 channels of 4K / 6 MP at 30 fps
3 channels of 5 MP at 30 fps
4 channels of 4/3 MP at 30 fps
4 channels of 1080p at 30 fps
8 channels of 1080p at 60 fps
Display Split 1/4/8/9
OSD Camera title, time, video loss, camera lock, motion detection, recording


Compression H.265, H.264, MJPEG
Supported IP Camera Resolution 8 MP
6 MP
5 MP
4 MP
3 MP
1.3 MP
Maximum Bandwidth 200 Mb/s incoming
Bit Rate 16 kb/s to 20 Mb/s per channel
Recording Mode Manual
Schedule (regular, continuous)
Motion detection (video detection, motion detection, tampering, video loss)
Recording Intervals 1 to 120 minutes, default 60 minutes
Pre-Recording: 1 to 30 seconds
Post-Recording: 10 to 300 seconds

Video Detection & Alarm

Triggers Recording, PTZ, tour, alarm out, video push, email, FTP, snapshot, buzzer, and screen tips
Video Detection Motion detection
MD Zones: 396 (22 x 18)
Video loss & tampering
Alarm Input 4 channels
Low level effective, green terminal interface
Relay Output 2 channels
NO/NC programmable, green terminal interface

Playback & Backup

Playback 1/4/8
Search Modes Time/date, alarm, motion detection & exact search (accurate to one second), smart search
Playback Functions Play, pause, stop, rewind, fast play, slow play, next file, previous file, next camera, previous camera, full screen, repeat, shuffle, backup selection, digital zoom
Backup Modes USB device, network

Intelligent Video

Standard Features IVS Triggers:
Tampering with the camera
Camera loses or changes focus drastically
Error writing to an onboard microSD card
Error sending or receiving data over the network
Unauthorized access to the camera
Premium Features IVS Triggers:
Motion: An object moves through any part of the scene
Tripwire: A target crosses a user-defined line
Intrusion: A target enters or exits a defined perimeter
Scene Change: A person or object moves the camera to change the scene or covers the camera to obscure the scene
Abandoned/Missing Object: A target leaves an object in designated area, or a target removes an object from the same designated area
Advanced Features Recording Triggers:
Facial Detection: Detects and captures a snapshot of a human face in a defined area within a scene
People Counting: Measure the number of customers, visitors, or passengers in a surveillance scene
Heat Map: Generates a visual representation of data


Third-Party Support Dahua, Arecont Vision, Axis, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videotec, Vivotek, and others


Ethernet 1 x RJ45 port, 10/100/1000M
PoE 8 x ports, IEEE 802.3af/at
Network Function HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP filter, PPPoE, DDNS, FTP, alarm server, IP search
Support for Dahua IP cameras, DVRs, NVS
Maximum User Access 128 users
Mobile OS Support iOS & Android
Interoperability ONVIF 2.4, CGI conformant


Internal HDD 2 SATA ports, total capacity up to 8 TB (HDDs available separately)
HDD Mode Single

Auxiliary Interface

USB 1 x USB 3.0
1 x USB 2.0


Power Supply 100-240 VAC, 60/50 Hz
Power Consumption NVR:
Total PoE Budget 25.5 W single port, 130 W total
Certifications CE: EN55032, EN55024, EN60950-1 Safety: UL 60950-1, CAN/CSA C22.2 No.60950-1
Electromagnetic Compatibility (EMC): FCC CFR 47 Part 15 Subpart B, ANSI C63.4-2014
Operating Temperature 14 to 131°F / -10 to 55°C
Storage Temperature -4 to 158°F / -20 to 70°C
Storage Humidity 0-90% RH
Rack Mount 1 RU
Dimensions 14.8 x 12.9 x 2.1″ / 375 x 327.5 x 53 mm
Weight Without HDD: 5.7 lb / 2.6 kg

Additional information

Weight 9 lbs
Dimensions 18 × 7 × 17 in