The Dahua SDT4E425-4F-GB-A-PV1 surveillance camera is a Speed Dome X-Spans Dual model that offers advanced surveillance performance with two 4MP sensors each. This PTZ (Pan, Tilt, Zoom) device benefits from TiOC and WizSense technology, which ensures intelligent detection and reduction of false alarms by accurately identifying people and vehicles.
Technical specifications Dahua SDT4E425-4F-GB-A-PV1 surveillance camera:
- Manufacturer: DAHUA
- Sensor: Panorama: 1/2.8″ CMOS; PTZ: 1/2.8″ CMOS
- Lens: Panorama: 2.8 mm; PTZ: 5 mm125 mm
- Resolution: Panorama: 2560 (H) × 1440 (V); PTZ: 2560 (H) × 1440 (V)
- Video compression: H.265; H.264B; H.264; H.264H; MJPEG(Sub Stream 1); smart H.265+; smart H.264+
- Minimum illumination: Panorama: 0.001 lux at F1.0 (Color, 30 IRE); 0.0005 lux at F1.0 (B/W, 30 IRE); 0 lux (illuminator on); PTZ: 0.005 lux at F1.6 (Color, 30 IRE); 0.0005 lux at F1.6 (B/W, 30 IRE); 0 lux (illuminator on)
- IR distance: Panorama: 30 m; PTZ: 100 m
- White light distance: Panorama: 30m; PTZ: 50m
- Viewing angle – Panorama: horizontal: 101; vertical: 53; diagonal: 120
- Viewing angle – PTZ: horizontal: 51.93.0; vertical: 39.72.2; diagonal: 63.13.7
- Communication interface: RJ-45 (10/100 Base-T)
- Electronic shutter speed: Panorama: 1/3s-1/100000s; PTZ: 1s-1/30000s
- Audio: Yes
- Recording: Micro SD card slot (512 GB, not included); FTP/SFTP; NAS
- Special functions: BLC; WDR; HLC; 2D NR; 3D NR; TiOC; WizSense; Smart dual light +, Auto tracking
- Alarm: Yes
- Protection grade: IP66
- Power supply: 12 VDC, 3 A ± 10%;
- Consumption: maximum 25W
- Operating temperature: From 40C up to +65C
- Case type: Speed Dome
- Dimensions: 160.0 mm × 184.4 mm × 304.6 mm
- Weight: 3.41 kg
- Included: Mounting bracket
TiOC Technology

TiOC, also called the “three-in-one” camera, combines continuous color monitoring, proactive deterrence, and artificial intelligence into a unique, intelligent, and innovative solution. This optimizes time and reduces costs for distributors and installers. By accurately identifying potential risks and effectively warning intruders, TiOC ensures robust protection for the safety of people and the integrity of property.
TiOC Core Technologies
Active Deterrence

Active deterrence is a surveillance system that can deter intruders in time and can. Powered by a deep learning algorithm, it provides high-precision intrusion alarms and sends real-time event notifications and videos to your mobile phone when an alarm is triggered. Users can also view live videos and play back video recordings via DMSS. With an integrated microphone and speaker, this system also offers two-way audio function.
WizSense

Launched by Dahua Technology, WizSense is a series of advanced AI products and solutions equipped with an independent AI chip and a deep learning algorithm. It can accurately recognize people and vehicles in an image, allowing users to focus on real targets. WizSense emphasizes people and vehicles, offering intelligent functions, simple configuration and affordable products, beneficial to everyone.
Business Challenges
False alarms: Unnecessary waste of time due to alarms triggered by pets, insects, leaves and other irrelevant objects.
Delayed response: Sole reliance on video playback to confirm post-incident events. Difficulty finding evidence: Inefficiency in obtaining clear evidence due to unclear and colorless images at night.
Complexity of system deployment: Additional costs and difficulties in installing an extensive surveillance system.

X-Spans
The X-Spans series revolutionizes the concept of camera viewing by adding one or more additional lenses to the traditional PTZ configuration, thus providing a panoramic view along with minute details, all integrated into a single camera. This innovative approach enhances coverage and surveillance capability, allowing users to obtain an extended perspective and precise focus simultaneously.





