X-Spans Panoramic PTZ · 8+4 MP · 25× Zoom · TiOC · Xinghan AI
Dahua Panoramic TiOC PTZ
Dahua DH-SDT4E425-8P-GB-APV1 — 8+4 MP 25× X-Spans Panoramic TiOC PTZ Camera with Xinghan AI & Active Deterrence
The Dahua DH-SDT4E425-8P-GB-APV1 is an X-Spans series multi-sensor panoramic PTZ — two cameras inside one IP66, surge-protected housing. The overview channel is an 8 MP 1/2.7" CMOS with a 2.8 mm F1.4 lens spliced across a true 180° horizontal field of view, capturing the entire scene at all times. The detail channel is a 4 MP 1/2.8" CMOS PTZ with 5 – 125 mm F1.6 – F3.6 motorised optics, 25× optical zoom and 16× digital zoom — capable of detecting a target at 2500 m and identifying it at 250 m. Starlight low-light sensors push usable colour down to 0.005 lux. Dual-light arrays give the panoramic head 30 m IR + 30 m white, and the PTZ head 100 m IR + 50 m warm-light reach.
This camera is built for Australian sites where you would otherwise install two cameras — large carparks, school grounds, freight yards, transport hubs, depots, mining laydowns and council reserves — and want one head that maintains constant 180° awareness while a second head slews onto whatever the AI flags. Smart Tracking links the two channels so the PTZ automatically zooms onto any target the overview detects, then keeps tracking after the target leaves the panoramic FOV using Dahua's X-Spans relay tracking. Edge AI runs the new Xinghan Large-Scale AI Models with WizSense perimeter protection, SMD 4.0 and AcuPick. Active deterrence stacks red/blue light warning with 11 built-in alarms (plus 10 custom uploads) and a built-in speaker. Power is PoE+ (802.3at) or 12 VDC 3 A. Backed by a 3-year Australian warranty through CCTV Guru.
Optical Zoom
25× + 16× Digital
Dual Sensor
8 MP + 4 MP Starlight
Smart Dual Light+
IR 100 m · Warm 50 m
AI Engine
Xinghan + AcuPick
Active Deterrence
TiOC Strobe + Siren
Power
PoE+ 802.3at / 12 VDC
Why Choose the Dahua SDT4E425-8P-GB-APV1
Buying a panoramic PTZ replaces two traditional cameras with one head. Below are the six reasons this specific X-Spans build is the one Australian integrators ask for when they want the dual-camera concept to actually work in the field.
180° Awareness, Always-On
The 8 MP overview channel is permanently recording a true 180° splice — so when the PTZ is steered onto a target, you don't lose situational awareness of the rest of the scene.
25× Optical Zoom · 250 m Identify Range
The detail PTZ runs 5–125 mm motorised optics. DORI identify distance is 250 m at the tele end — long enough to read clothing and recognise faces across an entire carpark.
Smart Tracking Without Operator
WizTracking, relay tracking and linkage tracking work together so the PTZ automatically slews, zooms and follows whatever the overview channel's AI classifies as a person or vehicle.
TiOC Active Deterrence on a PTZ
The full TiOC stack — red/blue strobe, 11-sound alarm library and built-in speaker — mounted on a 25× PTZ that can challenge an intruder anywhere in its hemisphere.
Xinghan AI on the Edge
Xinghan Large-Scale AI Models bring transformer-architecture AI to the edge — joint inference between small and large models lets a single camera classify, track and respond on-device.
Built for Harsh Australian Outdoor
IP66 sealed, TVS 6000 V lightning + surge + voltage-transient protection, and rated –40 °C to +65 °C. From Alpine highway sites through to the Pilbara.
Important Install Note — PoE+ Required
Draws max 25 W. Requires 802.3at PoE+, not 802.3af. For runs approaching 100 m Ethernet limit use a local 12 VDC 3 A supply or a quality 802.3at midspan injector.
Technical Specifications
Overview Channel (Panoramic)
| Image Sensor |
1/2.7" CMOS |
| Max Resolution |
4096 (H) × 1860 (V) — 8 MP |
| Lens |
2.8 mm fixed · F1.4 |
| Field of View |
H: 180° · V: 86° |
| Min. Illumination |
0.005 lux @ F1.4 (colour) · 0 lux (illuminator on) |
| IR / White Light |
30 m / 30 m |
| DORI Distance |
Detect 56 m · Observe 22.4 m · Recognise 11.2 m · Identify 5.6 m |
Detail Channel (25× PTZ)
| Image Sensor |
1/2.8" CMOS |
| Max Resolution |
2560 × 1440 — 4 MP |
| Lens |
5–125 mm motorised vari-focal · F1.6–F3.6 |
| Optical Zoom / Digital Zoom |
25× / 16× |
| Field of View |
H: 51.9°–3.0° · V: 39.7°–2.2° |
| Min. Illumination |
0.005 lux @ F1.6 (colour) · 0 lux (illuminator on) |
| IR / Warm Light |
100 m / 50 m |
| WDR |
120 dB true WDR |
| DORI — Tele (125 mm) |
Detect 2500 m · Observe 1000 m · Recognise 500 m · Identify 250 m |
| Image Stabilisation |
EIS |
PTZ & Smart Tracking
| Pan Range |
0°–360° endless |
| Tilt Range |
–15° to +90° (auto flip 180°) |
| Manual Speed |
Pan 0.1°/s–180°/s · Tilt 0.1°/s–90°/s |
| Presets / Tours / Patterns / Scans |
300 / 8 (32 presets each) / 5 / 5 |
| Power-off Memory |
Yes |
| Smart Tracking |
WizTracking · Relay tracking (X-Spans) · Linkage tracking |
Intelligence, Video & Active Deterrence
| AI Platform |
Xinghan Large-Scale AI Models · WizSense |
| IVS |
Tripwire · intrusion · crossing-fence · loitering · abandoned/missing · parking · people gathering · linkage tracking |
| SMD |
SMD 4.0 |
| AcuPick |
Yes (overview channel) |
| Active Deterrence — Light |
Red/blue light warning · 5–30 s flash · high/medium/low frequency |
| Active Deterrence — Sound |
11 built-in + 10 custom uploads · 0–100% volume |
| Video Compression |
Smart H.265+ · H.265 · H.264 · MJPEG |
| Streaming |
3 streams per channel |
| Privacy Masking |
Up to 24 areas (8 per view) |
Audio, Alarm & Network
| Audio Input / Output |
1 in / 1 out · built-in speaker (mutually exclusive with line-out) |
| Alarm I/O |
2 in / 1 out |
| Network Port |
RJ-45 (100/1000 Base-T) |
| Interoperability |
ONVIF (Profile S, G, T) · CGI · SDK · P2P |
| Storage |
Micro SD up to 512 GB · FTP / SFTP · NAS |
| Mobile Client |
DMSS · DSS Pro |
Power, Environment & Build
| Power Supply |
12 VDC 3 A · PoE+ (IEEE 802.3at) |
| Power Consumption |
Basic 14 W · Max 25 W |
| Operating Temperature |
–40 °C to +65 °C |
| Protection |
IP66 · TVS 6000 V lightning · surge · voltage transient |
| Dimensions |
194.2 × 160 × 311 mm |
| Net Weight |
3.1 kg |
| Certifications |
CE · RCM (AU) |
| Australian Warranty |
3 Years (via CCTV Guru) |
Frequently Asked Questions
How many NVR channels does this camera use?
Two — the overview and detail channels each present as separate IP streams.
Is this a TiOC camera?
Yes — the APV1 suffix is the TiOC active-deterrence indicator on X-Spans cameras (equivalent to "PV" on bullets/turrets).
Does it support AcuPick?
Yes — on the overview channel, when paired with a Dahua 5-Series AcuPick NVR.
What power does it need?
PoE+ (IEEE 802.3at), not 802.3af, or 12 VDC at 3 A. Max draw 25 W.
How far can the PTZ see at night?
100 m IR and 50 m warm-light on the PTZ channel. DORI identify at 125 mm tele is 250 m.
What's the warranty in Australia?
3 years, supplied through CCTV Guru as an authorised Australian Dahua reseller.
Downloads
Order Your Dahua SDT4E425-8P-GB-APV1 from CCTV Guru
"Add to cart" to order online, or contact our Australian team for project pricing, multi-PTZ configuration advice, NVR sizing and PoE+ switch compatibility checks. We are authorised Australian Dahua resellers, hold stock locally, and back every X-Spans camera with a 3-year Australian warranty. cctvguru.com.au/pages/contact.
