X-Spans · 4 MP + 4 MP · 25× Zoom · TiOC · F1.0 Panorama
Dahua DH-SDT4E425-4F-GB-A-PV1 — 4 MP + 4 MP 25× X-Spans TiOC WizSense Network PTZ Camera with F1.0 Panorama & Active Deterrence
The Dahua DH-SDT4E425-4F-GB-A-PV1 is an X-Spans series dual-sensor PTZ — two cameras inside one IP66, surge-protected housing. The panorama channel is a 4 MP 1/2.8" CMOS paired with a 2.8 mm F1.0 large-aperture lens, capturing a 101° wide-angle scene at all times with class-leading low-light performance (0.001 lux colour). The detail channel is a 4 MP 1/2.8" Sony STARVIS™ CMOS PTZ with 5 – 125 mm F1.6 – F3.6 motorised optics, 25× optical zoom and 16× digital zoom — detecting targets at 2,500 m and identifying them at 250 m. The detail head's Smart Dual Light array delivers 100 m IR plus 50 m white light. Smart Tracking links the two channels so the PTZ automatically slews onto anything the panorama's AI flags. The WizSense platform runs Auto Tracking 3.0, SMD 4.0 and Quick Pick smart search. Active deterrence stacks red/blue light warning with 11 built-in sound alarms (plus custom uploads) and a built-in speaker. Power is PoE+ (802.3at) or 12 VDC 3 A, in a chassis rated –40 °C to +65 °C with TVS 6000 V lightning, surge and voltage-transient protection. Backed by a 3-year Australian warranty through CCTV Guru. Built for Australian carparks, school grounds, freight yards, depots, transport hubs and council reserves where one head should replace two cameras with brighter low-light coverage than any 8 MP panoramic in its class.
Optical Zoom
25× + 16× Digital
Dual Sensor
4 MP + 4 MP STARVIS
F1.0 Panorama
0.001 lux Colour
AI Engine
WizSense · Auto Tracking 3.0
Active Deterrence
TiOC Strobe + Siren
Power
PoE+ 802.3at / 12 VDC
See the Dahua TiOC PRO Platform in Action
Dahua's official TiOC PRO highlight — the same active-deterrence platform that runs on the SDT4E425-4F-GB-A-PV1's PTZ head. Red/blue light warning, audible alarms, smart dual light and full AI classification working together to challenge intruders the moment they're detected.
Why Choose the Dahua SDT4E425-4F-GB-A-PV1
This is the X-Spans build for sites where low-light performance matters more than ultra-wide panoramic FOV. Below are the six reasons it's the dual-sensor PTZ Australian integrators reach for on dimly-lit carparks, depot perimeters and after-hours yards.
F1.0 Panorama — Class-Leading Low Light
The 2.8 mm F1.0 large-aperture lens is the brightest panorama lens in Dahua's X-Spans family. Minimum colour illumination of 0.001 lux gives the panorama channel near-Starlight performance even in moonless yards — five times better than the F1.4 build.
25× Optical Zoom · 250 m Identify Range
The detail PTZ runs 5 – 125 mm motorised optics with Sony STARVIS™ sensor. DORI Identify distance is 250 m at the tele end — long enough to read clothing and recognise faces across an entire carpark or paddock approach.
Smart Tracking Without Operator Intervention
Auto Tracking 3.0 and IVS linkage let the panorama channel hand off targets to the detail PTZ automatically — the PTZ slews onto whatever the AI classifies as a person or vehicle and keeps it framed without an operator touching the joystick.
TiOC Active Deterrence on a PTZ
Most active-deterrence cameras are fixed bullets or turrets. This camera mounts the full TiOC stack — red/blue strobe with three flash frequencies, an 11-sound audible alarm library and a built-in speaker — on a 25× PTZ that can challenge an intruder anywhere in its hemisphere.
Fast Slew · 240°/s Preset Speed
Preset speed reaches 240°/s pan and 200°/s tilt — meaningfully faster than the larger 8+4 sibling. The PTZ can scan a 300-preset tour or auto-patrol after an IVS event without lagging behind the action.
Built for Harsh Australian Outdoor
IP66 sealed against driving rain, TVS 6000 V lightning + surge + voltage-transient protection, and rated operating range from –40 °C to +65 °C. Suitable for everything from Alpine highway sites through to the Pilbara.
Important Install Note — PoE+ Required
This camera draws a maximum of 25 W when illuminator, heater, active deterrence, ICR and PTZ are all active. It requires 802.3at PoE+, not standard 802.3af. On any deployment longer than 90 m, factor in cable resistance — for runs approaching the 100 m Ethernet limit we recommend either a local 12 VDC 3 A supply at the camera or a quality 802.3at midspan injector rather than relying on an underspecified PoE+ switch budget. Wall, ceiling, parapet, corner and pole brackets are all listed in the Compatible Mounts section below.
AI & Smart Detection Capabilities
Auto Tracking 3.0
Dahua's third-generation auto-tracking engine handles AI-driven human and vehicle following. The detail PTZ locks onto targets the panorama channel identifies and keeps them framed through pan, tilt, zoom and focus adjustments — fully autonomous.
Quick Pick Smart Search
Quick Pick lets you search recorded video by event type — motion, intrusion, tripwire, vehicle classification — and jump straight to the matching clips. Cuts investigation review time from hours of scrubbing down to minutes of targeted playback.
Full WizSense IVS Library
Tripwire, intrusion, climbing-fences detection, loitering, abandoned/missing object, fast-moving, parking detection, people gathering and human/vehicle alarm classification. Each event can trigger a preset, tour, capture, record, email or auto-patrol routine.
SMD 4.0 Smart Motion
Smart Motion Detection 4.0 filters out animal and foliage motion at the edge — leaving alerts on people and vehicles only. Slashes false-alarm volume across rural yards, carparks and bushland-adjacent sites.
TiOC Active Deterrence Stack
Red/blue light warning with three flash frequencies (high/medium/low) and 5 – 30 s duration. 11 built-in sound alarms plus importable custom sounds. Built-in speaker for site-specific challenges.
Smart Dual Light +
The detail head's dual-light array combines IR with white light. After dark the IR runs covertly until the AI classifies a target, then the 50 m white light triggers to capture full-colour evidence of the event.
PTZ Kinematics
360° Endless Pan (Detail Head)
Continuous 360° pan rotation on the detail PTZ with no mechanical stop — the PTZ can follow a target through any heading without re-homing. Panorama head tilts 13° to 23° for initial scene framing.
–15° to +90° Tilt with Auto Flip
Detail tilt range covers straight down to slightly above horizon. Auto-flip 180° lets the camera track a target passing directly underneath the housing without losing the view.
Fast Manual & Preset Speeds
Manual control to 200°/s pan and 120°/s tilt. Preset speed pushes to 240°/s pan and 200°/s tilt — faster than the larger X-Spans sibling, useful for IVS-triggered scene checks.
300 Presets · 8 Tours · 5 Patterns · 5 Scans
Up to 300 stored presets, 8 multi-stop tours (32 presets each), 5 recorded patterns and 5 line scans. Power-off memory keeps the position on reboot.
Technical Specifications
Panorama Channel
| Image Sensor |
1/2.8" CMOS |
| Maximum Resolution |
2560 (H) × 1440 (V) — 4 MP |
| Lens |
2.8 mm fixed |
| Maximum Aperture |
F1.0 (large aperture) |
| Field of View |
H: 101° · V: 53° · D: 120° |
| Min. Illumination |
0.001 lux @ F1.0 (colour) · 0.0005 lux @ F1.0 (B/W) · 0 lux (illuminator on) |
| IR / White Light |
30 m / 30 m |
| Tilt Range |
13° to 23° |
| Close Focus Distance |
0.2 m |
| Electronic Shutter |
1/3 s – 1/100,000 s |
| ROM / RAM |
4 GB / 1 GB |
Detail Channel (25× PTZ)
| Image Sensor |
1/2.8" Sony STARVIS™ CMOS |
| Maximum Resolution |
2560 (H) × 1440 (V) — 4 MP |
| Lens |
5 mm – 125 mm motorised vari-focal |
| Optical Zoom |
25× |
| Digital Zoom |
16× |
| Maximum Aperture |
F1.6 – F3.6 |
| Field of View |
H: 51.9° – 3.0° · V: 39.7° – 2.2° · D: 63.1° – 3.7° |
| Focus Control |
Auto · Semi-Auto · Manual |
| Iris Control |
Auto · Manual |
| Min. Illumination |
0.005 lux @ F1.6 (colour) · 0.0005 lux @ F1.6 (B/W) · 0 lux (illuminator on) |
| IR / White Light |
100 m / 50 m |
| WDR |
120 dB true WDR |
| DORI (Tele 125 mm) |
Detect 2,500 m · Observe 987.5 m · Recognise 500 m · Identify 250 m |
| Image Stabilisation |
EIS |
| S/N Ratio |
≥ 55 dB |
| ROM / RAM |
4 GB / 1 GB |
PTZ & Smart Tracking
| Pan Range (Detail) |
0° – 360° endless |
| Tilt Range (Detail) |
–15° to +90° (auto flip 180°) |
| Manual Speed |
Pan 0.1°/s – 200°/s · Tilt 0.1°/s – 120°/s |
| Preset Speed |
Pan 240°/s · Tilt 200°/s |
| Presets |
300 |
| Tours |
8 (up to 32 presets per tour) |
| Patterns |
5 |
| Scans |
5 |
| Idle Motion |
Pattern · Preset · Scan · Tour |
| Power-off Memory |
Yes |
| Auto Tracking |
Auto Tracking 3.0 |
Intelligence, Video & Active Deterrence
| AI Platform |
WizSense · Auto Tracking 3.0 |
| IVS |
Tripwire · intrusion · climbing-fences · loitering · abandoned/missing object · fast-moving · parking detection · people gathering · vehicle/human alarm classification · detail-camera linkage tracking |
| SMD |
SMD 4.0 |
| Quick Pick |
Yes (event-type smart search) |
| Active Deterrence — Light |
Red/blue light warning · 5 – 30 s flash duration · high/medium/low frequency |
| Active Deterrence — Sound |
11 built-in sound alarms + custom imports · built-in speaker |
| Video Compression |
Smart H.265+ · H.265 · Smart H.264+ · H.264 · H.264B · H.264H · MJPEG (sub stream 1) |
| Streaming |
3 streams (per channel) |
| Main Stream Frame Rate |
4 MP / 3 MP / 1080p / 1.3 MP / 720p @ 1 – 25/30 fps |
| Bit Rate Control |
CBR · VBR |
| Video Bit Rate |
H.264 96 Kbps – 14,848 Kbps · H.265 38 Kbps – 8,960 Kbps |
| WDR / BLC / HLC |
120 dB / Yes / Yes |
| Noise Reduction |
2D NR · 3D NR |
| Defog |
Electronic |
Audio, Alarm & Network
| Audio Compression |
PCM · G.711a · G.711Mu · G.726 · MPEG2-Layer2 · G.722.1 · G.729 · G.723 |
| Audio Input |
1 channel — LINE IN, bare wire |
| Audio Output |
1 channel — LINE OUT bare wire · built-in speaker (mutually exclusive) |
| Alarm Input |
2 channels — on/off 0 – 5 VDC |
| Alarm Output |
1 channel |
| Alarm Linkage |
Capture · recording · email · preset · tour · pattern · alarm digital · audio · warning light |
| Network Port |
RJ-45 (10/100 Base-T) |
| Network Protocols |
HTTP · HTTPS · TCP/IP · IPv4 · IPv6 · RTSP · RTMP · UDP · SMTP · NTP · DHCP · DNS · DDNS · 802.1x · SSL · QoS · FTP · UPnP · ICMP · SNMP · IGMP · ARP · RTCP · RTP · PPPoE · Bonjour · NFS |
| Interoperability |
ONVIF (Profile S, G, T) · CGI · SDK |
| Streaming Method |
Unicast / Multicast |
| Max Users |
20 (total bandwidth 64 Mbps) |
| Storage |
Micro SD up to 512 GB · FTP / SFTP · NAS |
| Management Software |
DMSS · DSS Pro |
| Mobile Client |
iOS · Android (DMSS) |
Power, Environment & Build
| Power Supply |
12 VDC, 3 A ± 10% · PoE+ (IEEE 802.3at) |
| Power Consumption |
Basic 12 W · Max 25 W (basic + illuminator + sound & light warning + PTZ operation + heater) |
| Operating Temperature |
–40 °C to +65 °C |
| Operating Humidity |
≤ 95% |
| Protection |
IP66 · TVS 6000 V lightning protection · surge protection · voltage transient protection |
| Product Dimensions |
160 mm × 184.4 mm × 304.6 mm (L × W × H) |
| Net Weight |
3.41 kg |
| Certifications |
CE — EN 55032 · EN 55024 · EN 50130-4 · RCM (AU) |
| Australian Warranty |
3 Years (via CCTV Guru) |
How It Compares — SDT4E425-4F-GB-A-PV1 vs SDT4E425-8P-GB-APV1
The closest sibling is the Dahua DH-SDT4E425-8P-GB-APV1 — the larger 8+4 MP X-Spans build with a true 180° panoramic field. Same chassis family, same 25× PTZ head, same TiOC active deterrence — but the two cameras target different priorities. The table below contrasts the two on the factors that drive the buying decision.
| Feature |
SDT4E425-4F-GB-A-PV1 (this camera)
|
SDT4E425-8P-GB-APV1 (sibling)
|
| Panorama Resolution |
4 MP (2560 × 1440) |
8 MP (4096 × 1860) |
| Panorama FOV |
H 101° · V 53° — wide-angle |
H 180° splice — true panoramic |
| Panorama Aperture |
F1.0 — brightest in class |
F1.4 |
| Panorama Min Illumination |
0.001 lux colour — 5× brighter sensitivity |
0.005 lux colour |
| Detail Resolution |
4 MP STARVIS™ |
4 MP |
| Detail Zoom & DORI |
25× · Identify 250 m at tele |
25× · Identify 250 m at tele |
| AI Platform |
WizSense + Auto Tracking 3.0 |
WizSense + Xinghan Large-Scale AI Models |
| Smart Search |
Quick Pick (event-type) |
AcuPick (attribute-based) |
| Active Deterrence |
TiOC — strobe + 11 sound + speaker |
TiOC — strobe + 11 sound + speaker |
| Preset Slew Speed |
240°/s pan · 200°/s tilt — faster |
180°/s pan · 90°/s tilt |
| Power Draw |
Max 25 W · PoE+ |
Max 25 W · PoE+ |
| Operating Temp |
–40 °C to +65 °C |
–40 °C to +65 °C |
| IP Rating |
IP66 · TVS 6000 V |
IP66 · TVS 6000 V |
| Best For |
Sites with dim ambient light where panorama low-light matters more than 180° awareness |
Large sites needing maximum panoramic situational awareness and attribute-based search |
Recommended NVR Pairings
A dual-sensor PTZ uses two NVR channels. Below are four CCTV Guru-stocked Dahua AI NVRs sized to the deployments where this camera is most often specified.
Dahua DHI-NVR5216-16P-AI/ANZ
5-Series AcuPick NVR · 16 channels · 16 PoE+ ports (1–8 ePoE) · 2 HDD bays · 1U · 384 Mbps incoming. The most common pairing — runs the PTZ on PoE+ plus 13 other fixed cameras around the site.
View Dahua NVR5216-16P-AI →
Dahua DHI-NVR5432-AI/ANZ
5-Series AcuPick NVR · 32 channels · 4 HDD bays · dual GbE NICs · dual HDMI + dual VGA · 1.5U. Enterprise-scale across the entire estate — sites running multiple X-Spans PTZs alongside fixed cameras.
View Dahua NVR5432-AI →
Dahua DHI-NVR5208-8P-AI/ANZ
5-Series AcuPick NVR · 8 channels · 8 built-in PoE ports · 2 HDD bays · 1U. Sized for a single-PTZ deployment alongside 4–6 fixed cameras — small business and high-end residential.
View Dahua NVR5208-8P-AI →
Dahua DHI-NVR4216-16P-AI/ANZ
4-Series WizSense AI NVR · 16 channels · 16 PoE ports · 2 HDD bays · 4K HDMI · Smart 2.0 AI. The value-pick 16-channel build for sites that don't need full 5-Series search.
View Dahua NVR4216-16P-AI →
Compatible Mounts & Accessories
PFB301C — Ceiling Mount
Standard ceiling-mount bracket for indoor or covered-area installs — entry lobbies, depot canopies, undercover loading bays.
PFB301S-E — Plane Mount
Flat-surface plane mount. Use for soffit, overhang or eave installs where the camera needs to hang from a horizontal surface.
PFB305W — Wall Mount
Heavy-duty wall mount bracket sized for the X-Spans housing. Use for façade, brick, render and tilt-slab walls.
PFA150 — Pole Mount
Mounts the camera to 60 – 110 mm diameter poles — light poles, fence posts, perimeter pylons. The default outdoor option for carpark and yard deployments.
PFA151 — Corner Mount
Mounts the camera to an external building corner. Matches the camera's powder-coat finish.
PFA126 — Junction Box · DC12V/3A Adapter
PFA126 provides a tidy in-wall junction box for cable termination. The DC12V/3A adapter is the genuine Dahua local-power option when running on 12 VDC instead of PoE+.
Frequently Asked Questions
Is the Dahua SDT4E425-4F-GB-A-PV1 NDAA compliant?
No. Dahua is not certified under NDAA Section 889. If your project has an NDAA mandate (US federal, certain Australian government contracts, or critical-infrastructure tenders that follow the same standard), choose a NDAA-compliant brand from our range instead.
How many NVR channels does this camera use?
Two. The panorama channel and the detail channel each present as a separate IP video stream, so they consume two channels on the NVR. Use a 16-channel NVR if you want this camera plus 12–14 other fixed cameras on the same recorder.
Is this a TiOC camera?
Yes — the A-PV1 suffix is the TiOC active-deterrence indicator on X-Spans cameras. The detail PTZ head includes red/blue strobe with three flash frequencies, 11 sound alarms with custom-sound upload, and a built-in speaker.
Does it support AcuPick attribute search?
This model supports Quick Pick — the predecessor to AcuPick. Quick Pick lets you search recorded footage by event type (motion, tripwire, intrusion, vehicle classification) and jump to matching clips, but it does not support attribute-based search (colour, clothing, direction). For full AcuPick attribute search on an X-Spans build, see the 8+4 MP sibling.
What power does it need?
PoE+ (IEEE 802.3at), not standard 802.3af, or 12 VDC at 3 A. Maximum draw is 25 W with illuminator, heater, active deterrence and PTZ all active. A standard 802.3af PoE switch will not run this camera.
How well does the panorama camera see in the dark?
Exceptionally well — the 2.8 mm F1.0 large-aperture lens gives the panorama channel a 0.001 lux colour minimum illumination. That's roughly five times more light-sensitive than the F1.4 panorama on the larger 8+4 sibling. The panorama channel also has a 30 m IR + 30 m white-light array for fully-dark conditions.
Can the camera follow a target automatically?
Yes — Auto Tracking 3.0 lets the detail PTZ lock onto any target the panorama channel's AI classifies as a person or vehicle. The PTZ slews, zooms and follows without an operator touching the joystick.
Does it have a built-in speaker?
Yes — built-in speaker for active-deterrence audio playback. Note: the speaker and the line-out audio output are mutually exclusive — use one or the other, not both simultaneously. NDIS, retail and public-space sites should check local audio-recording legislation before enabling sound recording on the audio input.
What temperature range is it rated for?
–40 °C to +65 °C. Built-in heating glass keeps the optics clear at low temperatures. Suitable for Alpine, desert, coastal and mining-site Australian deployments.
Can I view the camera live on my phone?
Yes — the camera works with Dahua's free DMSS app on iOS and Android. Add the device with the QR code on the housing, sign in, and you get live view, two-way audio, motion alerts and recorded-footage playback from anywhere with internet. No subscription required.
Downloads
Order Your Dahua SDT4E425-4F-GB-A-PV1 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 and Australian-based tech support. Phone, email or live chat us through cctvguru.com.au/pages/contact — most enquiries are answered the same business day.
