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VD-SD4825X  4K 25X Starlight IR WizSense Network PTZ Camera
VD-SD4825X Incredible 1/2.8"  STARVIS™ CMOS Ultra 4K HD PTZ Camera
VD-SD4825X Powerful 360˚ endless Pan, 90˚ Tilt, 25X Optical Zoom


4K 25X Starlight IR WizSense Network PTZ Camera


  8MP IP PoE PTZ Camera: 1/2.8" 8Megapixel STARVIS™ CMOS
  Powerful 25x optical zoom
  Starlight technology
  IR distance up to 100 m
  Perimeter protection
  Face detection


DT085G(图1)  PTZ-4818X-IZ(图2)  PTZ-4818X-IZ(图3)  PTZ-4818X-IZ(图4)  PTZ-4518X-IZ(图3)  PTZ-4518X-IZ(图4)  PTZ-4518X-IZ(图6)  PTZ-4818X-IZ(图8)  PTZ-4518X-IZ(图2)





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Remote Access & Smart Playback

Instant Access to your property anytime & anywhere. On SmartPass/DMSS software, videos are categorized by human/vehicle/pet events for an easy playback.

Dahua Starlight Camera

Starlight Technology

For challenging low-light conditions, Starlight Ultra-low Light Technology offers the best in light sensitivity, capturing color in vivid detail, even in lighting as low as 0.005 lux.

Two-way talk ptz camera

Real-Time Two-Way Talk

The built-in mic & speaker allow you to have real-time 2-way talk, record & replay videos with audio, and customize the siren with your own voice.

Incredible 1/2.8"  STARVIS™ CMOS Ultra 4K HD PTZ Camera    

The Newest Sensor brings you the ultimate 4K experience and captures more details, especially in low light,With a high resolution of 8megapixels (3840 x 2160), this 8MP HD IP surveillance camera is able to capture videos in 3840p HD quality. It is a huge advancement compared to 720p HD or 1080p Full HD. you never miss a single detail of your loved ones. which enables you to see all objects very clearly.    


Rich AI (Artificial Intelligence) VIDEO SYSTEM Function(IVS)     

Support alarm triggering by target types (human and vehicle). Support filtering false alarms caused by animals, rustling leaves, bright lights, etc,Abandoned/ Missing can timely, quickly and accurately respond to monitoring events in specific area. It enhances monitoring efficiency. At the same time, the cameras can support face detection, and can quickly capture a face and upload the image to the server, ideal for business intelligence, and Facial Detection, for searching or identification of individuals.
It provides ultra-high-definition, smooth and stable video effects for users. The system realize storage, transmission, positioning, intercom and other functions, which assist user units in daily visual inspection, mobile law enforcement monitoring, emergency command and dispatch, and intelligent application of safe production and other business management.    


Face Detection    

Supports 6 attributes and 8 expressions: Gender, age, glasses, mask,
beard and expressions (anger, sadness, disgust, fear, surprise, calm,
happiness, and confusion). It also supports face cutout settings: Face,and single inch photo. Three snapshot methods are also featured:Real-time snapshot, priority snapshot, and quality priority.    


BLC and HLC digitally adjust to compensate for uneven illumination    

By enabling BLC, you are telling your camera to overexpose the brighter parts of the image in order to properly expose the darker parts.
Highlight Compensation (HLC) is a setting that allows your camera to compensate for the brighter parts of an image, preserving detail in the brighter parts of the image that would otherwise be blown away.
You may find yourself with very bright lights in your camera's field of view, causing parts of the image to blow up. Think of the headlights of a car that shines on your camera. When the camera is correctly exposing your scene, bright headlights can cause the image to be overexposed, resulting in a loss of information.
To adjust the compensation of the VD-SD4825X camera, please log in to the web interface. From here, navigate to Settings > Image > Image > Exposure Settings.    


WDR can observe any detail of the image 

Wide Dynamic Range (WDR) uses two image sensors to capture the same scene at two different exposures. WDR sensors produce images that are properly exposed in the darker and brighter parts of the image, providing more detail in a wider dynamic range between shadows and highlights.
You can set WDR to On, Off, or Auto. When set to Auto, the WDR setting will turn itself on and off as needed. This is ideal for uneven lighting only at certain times of the day. For example, you have east-facing windows, you really only need WDR in the morning when the sun is pouring into the room.
You can also adjust the strength of WDR if it is on or set to automatic. The higher the value, the less contrast between dark and light images. Adjust this setting carefully, as the higher the WDR, the lower quality pictures your camera will produce.    


3DNR Enhanced Clarity in Low-Light Situations    

3DNR can improve image denoising performance with predictive detail preservation and enhancement, enabling cameras to capture clearer, sharper image quality in still image areas. Additionally, it is capable of capturing sharper image quality for moving objects and extremely low light conditions.    


Cutting-Edge H.265 Video Compression    

An advanced compression codec like H.265 results in a lower bitrate and less need for storage. 


Two Way Audio    

Support Two-way Audio, 1 channel Audio Input and Audio Output, reserved audio input and output interfaces, if you want to achieve Two-way Audio, you can buy additional pickups and speakers.    


Support 256GB SD Card Slot   

The SD card will record when motion detection is triggered. The camera supports pre-record and post-record. When the SD card is full, it will automatically cover the old video.(Not Include SD Card)    


Powerful 360˚ endless Pan, 90˚ Tilt, 25X Optical Zoom    

This camera is able to capture videos in 4K super HD quality, sharper & clearer pictures; and it is capable of rotating 360˚ horizontally 90˚vertically, covering wider areas only with one camera, and no blind spot left. 30x optical motorized zoom enables you to zoom in to see more details of far-away objects without impairing image quality or zoom out to get a wider and larger view.    


High-Quality 100Meter Night Vision Camera    

4K Ultra HD, IR camera with built-in 4pcs IR LEDs to achieve amazing 100 meters night vision range in dark, amazing PTZ features maximize nighttime surveillance, HD images and videos even in the dark, a great solution for large areas like parking areas, garage, backyard, front yard.   


Camera Motion Detection – Get a visual alert.    

This feature provides a visual indicator on the monitoring screen when motion is detected within the camera's field of view, so that an operator is quickly alerted when activity is detected.    


Easy access via free Mobile Device APP & PC Software    

When you go outside,you needn't to worry about your property security. By using this camera system,you can remote view live video simultaneously at anytime, anywhere with wifi/4G on smartphone/iPad/PC. With the free app Watch live streams and view playbacks instantly, helping you stay informed whenever, wherever.


Support Cruise Zoom    

Support 300 Preset Points, Zoom Lens Status Can Be Saved During The Preset.    


Weatherproof camera built for any climate    

Use them as outdoor cameras or indoor cameras as they are built tough to withstand whatever the weather throws at them: rain, snow, dust and hot days. With IP66 weatherproof rating and cables threaded through the stand for extra protection ensure you can rely on their performance, day in, day out..    


PoE – Easy Setup, Plug & Play   

A real plug and play security system! It features PoE (Power over Ethernet), with a single cable connecting each IP camera to the NVR for both power supply and video signal transmission. Easy wiring – the wiring process can’t be simpler for DIY enthusiasts and beginners.    


Use our NVR Work 4K for 24/7 Reliable Recording   

If you have multiple IP cameras or if you want 24/7 recording, a POE NVR is your best choice. The NVR works perfectly and efficiently with the cameras for round-the-clock monitoring and recording for your home & business security and surveillance.    



 If you want to save videos for a much longer time or manage multiple cameras, you can simply connect this camera to a compatible Vikylin NVR or security camera system.

* Vikylin NVRs are recommended for best performance.    


Camera Not include Power Supply   

Camera Not include Power Supply,the camera has Poe function and can be used with switches & routers with Poe ports. If there is no Poe power supply, an additional 12V power supply is required.    

Image Sensor 1/2.8" CMOS
Pixel 8 MP
Max. Resolution 3840 (H) × 2160 (V)
Electronic Shutter Speed 1/1 s–1/30,000 s
Min. Illumination Color: 0.005 lux@F1.6
B/W: 0.0005 lux@F1.6
0 lux (IR light on)
Illumination Distance 100 m (328.08 ft) (IR)
Illuminator On/Off Control Zoom Prio; Manual; Smart IR; Off
Illuminator Number 4 (IR)
Focal Length 5 mm–125 mm
Max. Aperture F1.6–F3.6
Field of View H: 53.1°–3.4°; V: 30.4°–1.9°; D: 59.3°–3.9°
Optical Zoom 25×
Focus Control Auto; Semi-auto; Manual
Close Focus Distance 0.1 m–1.5 m (0.33 ft–4.92 ft)
Iris Control Auto; Manual
DORI Distance Detect Observe Recognize Identify
2,161.4 m (7,091.21 ft) 864.6 m (2,836.61 ft) 432.3 m (1,418.31 ft) 216.1 m (708.99 ft)
Pan/Tilt Range Pan: 0° to 360° endless
Tilt: –15° to +90°, auto flip 180°
Manual Control Speed Pan: 0.1°–200°/s
Tilt: 0.1°–120°/s
Preset Speed Pan: 240°/s; Tilt: 200°/s
Preset 300
Tour 8 (up to 32 presets per tour)
Pattern 5
Scan 5
Power-off Memory Yes
Idle Motion Preset; Tour; Pattern; Scan
PTZ Protocol DH-SD
Pelco-P/D (auto recognition)
IVS (Perimeter Protection) Tripwire and intrusion. Support alarm triggering by target types (human and vehicle). Support filtering false alarms caused by animals, rustling leaves, bright lights, etc.
Face Detection Yes
Video Compression Smart H.265+; H.265; Smart H.264+; H.264B; H.264M; H.264H; MJPEG (Sub Stream 1)
Streaming Capability 3 streams
Resolution 4K (3840 × 2160); 4M (2560 × 1440); 3M (2304 × 1296); 1080p (1920 × 1080); 960p (1280 × 960); 720p (1280 × 720); D1 (704 × 576/704 × 480); VGA (640 × 480); CIF (352 × 288/352 × 240)
Video Frame Rate Main stream: 4K/4MP/1080p/1.3M/720p (1–25/30 fps)
Sub stream 1: D1/CIF (1–25/30 fps)
Sub stream 2: 1080p/1.3M/720p/CIF (1–25/30 fps)
Bit Rate Control CBR; VBR
Video Bit Rate H.264: 3328 kbps–8192 kbps
H.265: 1280 kbps–8192 kbps
Day/Night Auto (ICR); Color; B/W
White Balance Auto; indoor; outdoor; tracking; manual; sodium lamp; natural light; street lamp
Gain Control Auto; Manual
Noise Reduction 2D NR; 3D NR
Motion Detection Yes
Region of Interest (RoI) Yes
Image Stabilization EIS
Defog Electronic defog
Digital Zoom 16×
Image Rotation 180°
Privacy Masking Up to 24 areas can be set, with up to 8 areas in the same view
S/N Ratio ≥ 55 dB
Audio Compression G.711a; G.711Mu; G.726; MPEG2-Layer2; G722.1; G.729; G.723
Network Port RJ-45 (10/100 Base-T)
Network Protocol HTTP; HTTPS; IPv4; RTSP; UDP; SMTP; NTP; DHCP; DNS; DDNS; IPv6; 802.1x; QoS; FTP; UPnP; ICMP; SNMP v1/v2c/v3 (MIB-2); IGMP; ARP; RTCP; RTP; PPPoE; TCP; RTMP
Interoperability ONVIF Profile S&G&T; CGI
User/Host 20 (total bandwidth: 64 MB)
Storage FTP; Micro SD card (256 GB)
Browser IE 7 and later versions
Chrome 42 and earlier versions
Firefox 52 and earlier versions
Management Software Smart PSS; DSS; DMSS; Easy4ip; IVSS; Player; Configtool; NVR; Smart Player
Mobile Client iOS; Android; iPhone; iPad
Certifications CE: EN55032/EN55024/EN50130-4
FCC: Part15 subpartB, ANSI C63.4-2014
UL: UL60950-1+CAN/CSA C22.2, No. 60950-1
Audio Input 1 channel
Audio Output 1 channel
Two-way Audio Yes
Alarm Input 2 channel, digital input (0–5 VDC)
Alarm Output 1 channel
Alarm Linkage Capture; preset; tour; pattern; recordings on SD card; alarm digital input; send email
Alarm Event Motion/tampering detection; audio detection; network disconnection detection; IP conflict detection; memory card state detection; memory space detection
Power Supply 12 VDC, 3 A (± 10%)
PoE+ (802.3at)
Power Consumption Basic: 9.8 W
Max.: 20 W (illuminator)
Operating Temperature –40 °C to +70 °C (–40 °F to +158 °F)
Operating Humidity ≤ 95%
Protection IP66; TVS 6000 V lightning proof; surge protection; voltage transient protection
Product Dimensions 269.9 mm × Φ160 mm (10.62" × Φ6.30")
Net Weight 3.0 kg (6.61 lb)
Gross Weight 4.3 kg (9.48 lb)




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