United States
Q
What is a Dahua 4 Channel NVR and how does it work?
A
A Dahua 4 Channel NVR is a network video recorder that manages up to four IP cameras. It captures, compresses, stores and streams video over Ethernet, enabling central monitoring and remote access via web or mobile app.
Q
Which video resolutions are supported by the Dahua 4 Channel NVR?
A
Dahua 4 Channel NVRs support up to 8MP (4K) resolution per channel. They automatically detect camera resolution and record at maximum quality for detailed playback.
Q
Does the Dahua 4 Channel NVR include PoE ports?
A
Yes, select Dahua 4 Channel PoE NVR models feature four integrated PoE ports, providing power and data over a single Ethernet cable, simplifying installation.
Q
What HDD capacity does the Dahua 4 Channel NVR support?
A
It supports up to two 6TB SATA HDDs (12TB total). You can configure RAID 0/1 for optimized capacity or redundancy.
Q
How do I configure remote viewing on the Dahua 4 Channel NVR?
A
Enable DHCP or assign a static IP, then register the NVR on Dahua’s P2P platform via its serial number. Use the DMSS mobile app or web client for live and playback viewing.
Q
Is the Dahua 4 Channel NVR ONVIF compliant?
A
Yes, Dahua 4 Channel NVRs support ONVIF Profile S, ensuring interoperability with most third-party IP cameras for flexible system expansion.
Q
How do I restore video footage from the Dahua 4 Channel NVR?
A
Use the NVR’s export function: select a time range, choose the camera channel, then export via USB or network in AVI, MP4 or proprietary .dav format.
Q
Can the Dahua 4 Channel NVR detect motion or line crossing?
A
Yes, it features customizable Smart Motion Detection, line crossing and intrusion analytics per channel to trigger alarms and reduce false alerts.
Q
What mobile apps support the Dahua 4 Channel NVR?
A
Dahua’s official DMSS (iOS/Android) app provides push notifications, live view, playback and remote configuration for Dahua 4 Channel NVRs.
Q
How do I update firmware on the Dahua 4 Channel NVR?
A
Download the latest firmware from the Dahua website, copy it to a USB drive, insert into the NVR’s USB port, then navigate to System Maintenance > Firmware Upgrade.
Q
What bandwidth is required per channel on the Dahua 4 Channel NVR?
A
Each channel can consume up to 80Mbps at 8MP resolution with H.265+ encoding. Total inbound bandwidth should accommodate up to 320Mbps.
Q
Can I expand storage on the Dahua 4 Channel NVR?
A
Yes, you can attach external USB storage devices for backup or enable network storage (NAS/iSCSI) via SMB or HTTPS for extended retention.
Q
Does the Dahua 4 Channel NVR support audio recording?
A
Yes, it supports two-way audio when paired with compatible IP cameras featuring audio I/O or a separate audio input module.
Q
What power supply does the Dahua 4 Channel NVR require?
A
Non-PoE models use a 12V DC/2A adapter. PoE-enabled models require 48V DC PoE power input per IEEE 802.3af/at standards.
Q
How secure is the Dahua 4 Channel NVR against cyber threats?
A
It offers HTTPS, SSL encryption, user-level access control, IP/MAC filtering and automatic firmware updates to protect video data and network integrity.
Q
What warranty and support are included with the Dahua 4 Channel NVR?
A
Dahua provides a two-year limited warranty, free firmware updates, and global technical support for hardware troubleshooting and software configuration.
