Dahua 8+4MP X-Spans DH-SDT4E425-8P-GB-A-PV1-SL Panoramic PTZ Camera with 25x Zoom, TiOC & 100m IR

Product SKU: DH-SDT4E425-8P-GB-A-PV1-SL

Product Overview

The Dahua DH-SDT4E425-8P-GB-A-PV1-SL is an 8+4MP X-Spans TiOC panoramic PTZ camera designed to capture a continuous wide-area overview while simultaneously tracking and inspecting distant targets. Its 8MP overview channel produces a stitched 180° panoramic image, while the independent 4MP detail channel uses a motorised 5–125mm lens with 25× optical zoom. Auto Tracking 3.0 and Smart Tracking link both channels so activity detected within the panoramic scene can direct the PTZ lens towards the target without losing the wider context. The detail channel provides infrared illumination up to 100 metres and warm light up to 50 metres, while the panoramic channel provides 30-metre infrared and white-light coverage. TiOC active deterrence adds red-and-blue flashing warnings and configurable sound alarms. IP66, NEMA 4X, anti-corrosion coating, PoE+, 12V DC power and microSD storage up to 512GB support demanding commercial and industrial installations.

Key Capabilities

Best For

• Warehouses and Logistics Yards: Maintains a 180° overview while zooming towards people, vehicles or activity across loading and storage areas.
• Industrial Facilities: Combines perimeter analytics, tracking, active deterrence and anti-corrosion protection around exposed operational areas.
• Car Parks and Commercial Precincts: Tracks movement across broad open spaces without relying on a conventional PTZ view alone.
• Schools and Large Campuses: Provides wide situational awareness and detailed target monitoring around entrances, courtyards and boundaries.
• Critical Perimeter Monitoring: Uses human classification, SMD 4.0, Smart Tracking and TiOC warnings to support proactive site protection.

Why Choose the DH-SDT4E425-8P-GB-A-PV1-SL

The DH-SDT4E425-8P-GB-A-PV1-SL addresses a common limitation of conventional PTZ cameras: losing sight of the wider scene while the lens is zoomed towards a single target. Its dedicated 8MP panoramic channel maintains a continuous 180° overview, while the separate 4MP PTZ channel follows activity and captures close detail using 25× optical zoom. Auto Tracking 3.0, SMD 4.0, perimeter protection and TiOC warnings support faster event response, while Smart Dual Light provides infrared monitoring and colour event footage. Available through Security Wholesalers, this model suits projects requiring wide-area coverage and active intervention from one integrated camera. Buyers should still plan the mounting height, tracking zones, recorder bandwidth, storage retention, audio requirements and illumination behaviour before installation.

Buyer Decision Tips

Key Features & Technical Specifications

Product Type	8+4MP TiOC network panoramic PTZ camera with dual-channel imaging.
Model	DH-SDT4E425-8P-GB-A-PV1-SL.
Overview Channel	1/2.7-inch 8MP CMOS, maximum 4096 × 1860, 2.8mm fixed lens and 180° horizontal field of view.
Detail Channel	1/2.8-inch 4MP CMOS, maximum 2560 × 1440 and 5–125mm motorised lens.
Frame Rate	Up to 25fps at 50Hz or 30fps at 60Hz at the maximum resolution of each channel.
Optical Zoom	25× optical zoom on the detail channel with auto, manual and semi-automatic focus.
Detail Field of View	Horizontal 51.9°–3.0°, vertical 39.7°–2.2° and diagonal 63.1°–3.7°.
DORI Distance	Overview identification 5.6m; detail identification approximately 10m wide and 250m telephoto.
Minimum Illumination	Overview: 0.005 lux colour and 0.0005 lux monochrome; detail: 0.005 lux colour and 0.0005 lux monochrome; 0 lux with illumination active.
Illumination Range	Overview: 30m IR and 30m white light; detail: 100m IR and 50m warm light.
PTZ Movement	Endless 360° pan, -15° to +90° tilt and 180° automatic flip.
PTZ Programming	300 presets, eight tours, five patterns, five scans, idle motion and power-off memory.
AI and Tracking	Auto Tracking 3.0, Smart Tracking, SMD 4.0, perimeter protection, human classification and linkage tracking.
IVS Functions	Tripwire, intrusion, fence crossing, loitering, abandoned or missing objects, fast movement, parking and people gathering.
Active Deterrence	Red-and-blue flashing warning, 11 preset alarm sounds and up to 10 imported custom warnings.
Video and Storage	Three streams with Smart H.265+, H.265, Smart H.264+, H.264 and MJPEG; microSD up to 512GB, FTP, SFTP and NAS.
Audio and Alarm Interfaces	One line-level audio input, one line-level audio output or built-in speaker, two alarm inputs and one alarm output.
Network	10/100/1000Mbps Ethernet with ONVIF Profiles S, G and T, CGI, SDK and P2P.
Power	12V DC, 3A ±10% or PoE+ under IEEE 802.3at; 14W basic and 25W maximum consumption.
Protection and Dimensions	IP66, NEMA 4X, anti-corrosion coating and 6000V surge protection; 194.2 × 160 × 311mm; net weight 3.1kg.

Ideal Use Cases

Choosing the Right Model

• Choose this model if: The project needs a continuous 180° overview and an independent tracking PTZ with 25× optical zoom.
• Choose a conventional PTZ if: Wide panoramic context is not required while the lens is tracking or zooming.
• Choose fixed cameras as well if: Critical identification points must remain recorded from a fixed angle regardless of PTZ movement.
• Confirm the illumination zones if: The panoramic area extends beyond 30 metres or the required detail target is beyond the 100-metre IR range.
• Confirm the NVR and mounting assembly if: Smart Tracking, dual-channel recording, analytics search or anti-corrosion accessories are required.

FAQs

1. How do the panoramic and PTZ channels work together?
   The overview channel continuously captures an 8MP, 180° stitched panoramic view, while the 4MP detail channel uses the 25× optical-zoom PTZ lens to inspect selected targets. Smart Tracking links both channels so activity detected in the panoramic scene can direct the detail camera to rotate, zoom and focus on the moving subject while the wide overview remains available.
2. What resolution and frame rate does each channel provide?
   The overview channel records up to 4096 × 1860 at 25fps in 50Hz systems or 30fps in 60Hz systems. The detail PTZ channel records up to 2560 × 1440 at the same maximum frame rates. Each channel supports three streams, with Smart H.265+, H.265, Smart H.264+, H.264 and MJPEG available according to the selected stream.
3. How does the 25× optical zoom change the viewing distance?
   The detail channel uses a 5–125mm motorised lens with a horizontal field of view from approximately 51.9° to 3.0°. Its listed DORI identification distance changes from about 10 metres at the wide end to 250 metres at full telephoto. These planning distances do not represent intelligent-function range and depend on lighting, target size, atmosphere, mounting stability and configuration.
4. How do TiOC active deterrence and Smart Dual Light work?
   Configured events can trigger red-and-blue flashing lights and audible warnings through the built-in speaker. Flash duration is adjustable from 5 to 30 seconds, while warning volume and playback count can also be configured. Smart Dual Light normally uses infrared at night and activates white or warm light when a target appears, supporting colour event footage while reducing continuous light pollution.
5. Which intelligent detection and tracking functions are included?
   The camera supports tripwire, intrusion, fence crossing, loitering, abandoned or missing objects, fast movement, parking and people-gathering rules, together with human classification and linkage tracking. SMD 4.0 and perimeter protection help reduce false alarms. Auto Tracking 3.0 and Smart Tracking allow the detail PTZ channel to follow a target detected within the panoramic channel.
6. Does the camera have built-in two-way audio?
   The camera has a built-in speaker, one line-level audio input and one line-level audio output. A built-in microphone is not confirmed, and the line output and built-in speaker are mutually exclusive. Live two-way communication therefore requires a compatible external microphone or audio source, correct wiring and suitable recorder or software support. The speaker can also play active-deterrence warning messages.
7. What power, storage and environmental protection are provided?
   The camera supports 12V DC at 3A and PoE+ under IEEE 802.3at. Basic power consumption is listed at 14W and maximum consumption at 25W. It accepts a microSD card up to 512GB and supports FTP, SFTP and NAS. The housing is rated IP66 and NEMA 4X, operates from -40°C to +65°C and includes anti-corrosion coating and 6000V surge protection.
8. What should I confirm before specifying this panoramic PTZ camera?
   Confirm the required panoramic coverage, zoomed identification area, mounting height, tracking rules, active-deterrence settings, NVR compatibility, bandwidth, storage retention and power method. The camera weighs 3.1kg and requires a compatible mounting assembly. Security Wholesalers can review the proposed camera position and recorder to identify lens, analytics, mounting, power or compatibility limitations before installation.

Additional Information

Dahua DH-SDT4E425-8P-GB-A-PV1-SL Datasheet