SKU: 57741970939

DAHUA SDT4E425-8P-GB-APV1 8+4MP 25x TiOC Network Panoramic PTZ Camera

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Description

DAHUA SDT4E425-8P-GB-APV1 8+4MP 25x TiOC Network Panoramic PTZ CameraCamera Image Sensor Overview channel: 1 2. 7" CMOS; Detail channel: 1 2. 8" CMOS Pixel Overview channel: 8 MP; Detail channel: 4 MP Max. Resolution Overview channel: 4096 (H) 1860 (V); Detail channel: 2560 (H) 1440 (V) ROM Overview channel: 4 GB; Detail channel: 4 GB RAM Overview channel: 2 GB; Detail channel: 1 GB Electronic Shutter Speed 1 s1 30,000 s Scanning System Progressive Min. Illumination Overview channel: 0. 005 lux@F1. 4 (Color, 30 IRE);

Camera

Image Sensor

Overview channel: 1/2.7" CMOS; Detail channel: 1/2.8" CMOS

Pixel

Overview channel: 8 MP; Detail channel: 4 MP

Max. Resolution

Overview channel: 4096 (H) × 1860 (V); Detail channel: 2560 (H) × 1440 (V)

ROM

Overview channel: 4 GB; Detail channel: 4 GB

RAM

Overview channel: 2 GB; Detail channel: 1 GB

Electronic Shutter Speed

1 s–1/30,000 s

Scanning System

Progressive

Min. Illumination

Overview channel:
0.005 [email protected] (Color, 30 IRE);
0.0005 [email protected] (B/W, 30 IRE);
0 lux (illuminator on)
Detail channel:
0.005 [email protected] (Color, 30 IRE);
0.0005 [email protected] (B/W, 30 IRE);
0 lux (illuminator on)

Illumination Distance

Overview channel: 30 m (98.43 ft) (IR); 30 m (98.43 ft) (white light); Detail channel: 100 m (328.08 ft) (IR); 50 m (131.23 ft) (white light)

Illuminator On/Off Control

Overview channel:
Manual; Auto; Off
Detail channel:
Zoom Prio; Manual; Auto; Off

Illuminator Number

Overview channel: 2 (IR light); 2 (White light); Detail channel: 2 (IR light); 2 (Warm light)

Lens

Focal Length

Overview channel: 2.8 mm; Detail channel: 5 mm–125 mm

Max. Aperture

Overview channel: F1.4; Detail channel: F1.6-F3.6

Field of View

Overview channel: H: 180°; V: 86°; Detail channel: H: 51.9°–3.0°; V: 39.7°–2.2°; D: 63.1°–3.7°

Optical Zoom

Overview channel: NA; Detail channel: 25×

Focus Control

Auto; manual; semi-auto

Close Focus Distance

Overview channel: 0.6 m (1.97 ft); Detail channel: 0.1 m–0.5 m (0.33"–1.64")

Iris Control

Overview channel: NA; Detail channel: Auto; manual; iris prio

DORI Distance

Detect

Detect

Observe

Recognize

Identify

Overview channel:

2.8 mm

56.0 m (183.72 ft)

22.4 m (73.49 ft)

11.2 m

(36.74 ft)

5.6 m

(18.37 ft)

Detail channel:

W

100.0 m (328.08 ft)

40.0 m (131.23 ft)

20.0 m

(65.62 ft)

10.0 m

(32.81 ft)

Detail channel:

T

2500.0 m (8202.00 ft)

1000.0 m (3280.80 ft)

500.0 m

(1640.40 ft)

250.0 m

(820.20 ft)

DORI (Detect, Observe, Recognize, Identify) is a standard system (EN-62676-4) for defining the ability of a person viewing the video to distinguish persons or objects within a covered area. The numbers in this table do not reflect intelligent function distances. For intelligent function distances, refer to installation and commissioning manual/project design tool.

PTZ

Pan/Tilt Range

Pan: 0° to 360° endless
Tilt: –15° to +90°, auto flip 180°

Manual Control Speed

Pan: 0.1°/s–180°/s;
Tilt: 0.1°/s–90°/s

Preset Speed

Pan: 0.1°/s–180°/s;
Tilt: 0.1°/s–90°/s

Preset

300

Tour

8 (up to 32 presets per tour)

Pattern

5

Scan

5

Power-off Memory

Yes

Idle Motion

Preset; Pattern; Tour; Scan

Intelligence

IVS (Perimeter Protection)

Tripwire; intrusion; crossing fence detection; loitering detection; abandoned/missing object; fast moving; parking detection; people gathering; human alarm classification; linkage tracking

Smart Tracking

WizTracking: Xinghan large-scale AI models-driven human & vehicle tracking.

Relay tracking: X-SPANS series only. Tracking continues after target exits overview channel until target leaves scene.

Linkage tracking: X-SPANS series only. Tracks only targets visible in overview channel.

SMD

SMD4.0

Acupick

Uses deep learning algorithms and works with backend devices to accurately match targets, such as people and motor vehicles, and search through live and recorded videos to quickly locate targets

(Overview channel support)

Auto Patrol

After an IVS alarm is triggered, it can link with up to 5 presets or scan to patrol the key areas. IVS can be enabled with SMD at the same time.

Active Deterrence

Light Warning

Red-Blue light warning;
Flash duration: 5 s–30 s;
Flash frequency: high, medium, low

Sound Warning

Offers 11 sound alarm and 10 custom sound alarms can be imported.
Sound can be set from 0%–100%.
Play times can be set from 1-10.

Video

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

Overview channel: 8M (4096 × 1860); 2M (2048 × 928); 1080p (1920 × 1080); 720p (1280 × 720); 1024 × 448; D1 (704 × 576/704 × 480);VGA (640 × 480);CIF (352 × 288/352 × 240); Detail channel: 4M (2560 × 1440); 3M (2304 × 1296); 1080p (1920 × 1080); 1.3M (1280 × 960); 720p (1280 × 720); D1 (704 × 576/704 × 480);VGA (640 × 480); CIF (352 × 288/352 × 240)

Video Frame Rate

Overview channel:
Main stream: 4096 × 1860 @(1–25/30 fps)
Sub stream 1: 1024 × 448/D1/VGA/CIF @(1–25/30 fps)
Sub stream 2: 2048 × 928/1080p/1.3M/720p @(1–25/30 fps);
Detail channel:
Main stream: 4M/3M/1080p/1.3M/720p @(1–25/30 fps)
Sub stream 1: D1/VGA/CIF @(1–25/30 fps)
Sub stream 2: 1080p/1.3M/720p/ @(1–25/30 fps)

Bit Rate Control

CBR/VBR

Video Bit Rate

Overview channel:
H264: 128 kbps–16,384 kbps
H265: 51 kbps–13,312 kbps;
Detail channel:
H264: 96 kbps–16,384 kbps
H265: 38 kbps–10,240 kbps

Day/Night

Overview channel: Auto; Color; B/W; Electronic
Detail channel: Auto; Color; B/W; Electronic

BLC

Yes

WDR

Overview channel: DWDR; Detail channel: 120 dB

HLC

Yes

White Balance

Overview channel: Auto; indoor; outdoor; tracking; manual; sodium lamp; natural light; street lamp
Detail channel: Auto; indoor; outdoor; tracking; manual; sodium lamp; natural light; street lamp

Gain Control

Overview channel: Auto; manual; gain prio
Detail channel: Auto; manual; gain prio

Noise Reduction

Overview channel: 2D NR; 3D NR
Detail channel: Auto: 2D NR; 3D NR

Motion Detection

Yes

Region of Interest (RoI)

Yes

Image Stabilization

Overview channel: NA
Detail channel: Electronic Image Stabilization (EIS)

Defog

Overview channel: Electronic
Detail channel: Electronic

Digital Zoom

Overview channel: NA;
Detail channel: 16×

Image Rotation

Overview channel: NA
Detail channel: 180

S/N Ratio

Overview channel: ≥55 dB
Detail channel: ≥55 dB

Privacy Masking

Up to 24 areas can be set, with up to 8 areas in the

same view Multiple colors and mosaic available

Audio

Audio Compression

PCM, G.711A, G.711Mu, G.726, MPEG2-Layer2, G.722.1, G.729

Network

Network Port

RJ-45 (100/1,000 Base-T)

Network Protocol

HTTP; HTTPS; TCP/IP; IPv4; RTSP; UDP; SMTP; NTP; DHCP; DNS; DDNS; IPv6; 802.1x; SSL; QoS; FTP; UPnP; ICMP; SNMP; IGMP; ARP; RTCP; RTP; PPPoE; RTMP; Bonjour; NFS

Interoperability

ONVIF (Profile S & Profile G & Profile T);CGI;SDK;P2P

Streaming Method

Unicast/Multicast

User/Host

20 (total bandwidth: 64 M)

Storage

Micro SD card (512 GB); FTP/SFTP; NAS

Browser

web5.0:
IE 9 and later versions;
Chrome 41 and later versions;
Firefox 52 and later versions;
Safari 10 and later versions

Management Software

DMSS; DSS Pro

Mobile Client

iOS; Android

Certification

Certifications

CE: EN 50130-4
EN 55032
EN 55035
EN 61000-3-3
EN IEC 61000-3-2
EN 62368-1

Port

Audio Input

1 channel (LINE IN, bare wire)

Audio Output

1 channel (LINE OUT,bare wire;built-in speaker (mutually exclusive))

Alarm Input

2 (on-off value input: 0–5 VDC)

Alarm Output

1 channel

Alarm Linkage

Capture; recording; send email; preset; tour; pattern; alarm digital output; audio; warning light

Alarm Event

Motion/tampering detection; network disconnection detection; IP conflict detection; memory card state detection; memory space detection

Power

Power Supply

12 VDC, 3 A ± 10%;PoE (802.3at)

Power Consumption

Basic: 14 W;
Max: 25 W (illuminator + heating glass + Siren and Light Active Deterrence + ICR + PTZ)

Power Adapter

Optional

Environment

Operating Temperature

–40 °C to +65 °C (–40 °F to +149 °F)

Operating Humidity

≤95%

Protection

IP66; TVS 6000 V lightning proof; surge protection; voltage transient protection

Structure

Product Dimensions

194.2 mm × 160 mm × 311 mm (7.65" × 6.30" × 12.24") (L × W × H)

Net Weight

3.1 kg (6.83 lb)

Gross Weight

4.6 kg (10.14 lb)

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SKU: 57741970939

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4.7 ★★★★★
Based on 16 reviews
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Product Reviews
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Verified Purchase
Stacey kelchner
Phoenix, US
★★★★★ 5
Just as expected
Format: Paperback
High quality product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2025
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Verified Purchase
SJS
Houston, US
★★★★★ 5
Just read it. You won’t regret it.
Format: Hardcover
This book completely blew me away. I loved every single character—not just the FMC and MMC, but the side characters too, which is rare. In a first book, side characters can feel flat while the focus is on world-building, but that definitely wasn’t the case here. The romantic tension between the FMC and MMC was so good—seriously addictive. The plot itself felt pretty straightforward at first, and the world-building was easy to follow. It even gave me Heartless Hunter / Wolf King vibes… until the last 20 pages. And wow—those final pages. I usually spot plot twists coming, and I thought this one was going to be predictable, but I was completely wrong. That ending genuinely shocked me—I haven’t had that reaction to a book in a long time. I’m already counting down to book two (and that teaser chapter? Absolutely brutal). Just read it. You won’t regret it.
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Reviewed in the United States on May 4, 2026
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Verified Purchase
Nicole
Battle Creek, US
★★★★★ 4
4 Stars for Now!
Format: Kindle
I DEVOURED this book. I was in a huge slump after reading a horrible series right before this but after 3 pages of this book, I was hooked. I read the whole book in 2 days. I think the author did an amazing job at writing an engaging story with an amazing twist at the end. I know many readers feel betrayed by the twist and find the narrator to be unreliable but I feel that the twist was done in a great unsuspecting way. Though I do feel betrayed, I think there is so much room for redemption in the second book! The author also did an amazing job at world/character building. She was able to do so without interrupting the story which is one of my huge pet peeves. A lot of authors build by taking breaks in the plot or dialogue which I find choppy and disengaging but this author was able to build in an engaging way. There was some lack of world/character building but I think that was due to keeping reader in the dark. The world, politics, and characters were all very easy to understand. I found the romance a little lackluster and a bit off-kilter. Some of it was really pushy and rushed which left a bad taste in my mouth. I do hope the author delves deeper into the romance in coming books. The FMC was a breath of fresh air. She was not whiny or stuck-up like most books. She was never afraid to accept help from others but she was still able to shine with her intelligence. Not once did I think she made a poor decision just for the sake of a plot point. She was really easy to like. The MMC could use some work but I think that will happen more in coming books. This is a MUST read, my only advice would be to wait until it is a finished series!
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Reviewed in the United States on July 30, 2025
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Verified Purchase
Reading_with_Magic
Chelsea, US
★★★★★ 5
Need book 2 please :-)
Format: Kindle
From the very first chapter, Metal Slinger hooked me and refused to let go. Set in a brutal, metal-bound world where power is carved from steel and survival depends on strength, strategy, and sheer will, this story follows a young woman forced into a dangerous system where control over metal isn’t just magic — it’s dominance, protection, and rebellion. When she’s pulled into escalating conflict and shifting alliances, she quickly learns that power always comes with a cost. The magic system is sharp and immersive without being overwhelming. The way metal manipulation is woven into combat and politics makes every confrontation feel cinematic and high-stakes. It’s gritty, tense, and beautifully layered. The Brynn, our FMC absolutely shines. She’s fierce but not untouchable, resilient without feeling unrealistic. Watching her navigate betrayal, survival, and the slow awakening of her own strength felt earned every step of the way. There’s grit in her fight scenes and vulnerability in her quieter moments that make her deeply human. And the tension? Immaculate. The chemistry simmers under the surface before sparking into something electric. Every reluctant alliance, every charged interaction, every moment of “are they about to destroy each other or kiss?” had me flying through pages. The pacing is relentless — no filler, no wasted scenes. Twists land hard. Stakes keep climbing. And that ending? Absolutely feral. The kind that leaves you staring at the wall for a minute before immediately checking when book two releases. ✨ Gritty metal-based magic ⚔️ High-stakes survival 🔥 Slow-burn tension 🖤 Fierce, layered heroine 💥 A finale that HITS (but cliffhanger!) This is one of those fantasies that reminds you why you fell in love with the genre in the first place. If this is just Book One, I am more than ready to be emotionally wrecked again in the sequel.
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Reviewed in the United States on February 14, 2026
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Verified Purchase
Amy Farrell
Lexington, US
★★★★★ 5
Read this book! Then join our support group for the ending😜
While I’ve read some amazing books this year, it’s been awhile since I have completely devoured a book in less than 24 hours. This book was one I truly could not put down. I couldn’t fall asleep because I didn’t want to stop reading what happened next. The way this book starts is one of my absolute favorite ways to fall into a story - with no preamble and immediate conspiring amongst characters. Brynn has quickly become one of my new favorite FMCs. She is just so REAL. No whining or blaming her situation on everyone and everything else. She accepts her role in the world, but also holds a fierce determination to know the truth of that world. She is brave, yet terrified. Strong, yet self-conscious. She is cunning and intelligent and she doesn’t shy away from what is hard or allow emotion to overcome logic. I feel like she’s such a relatable character in everything that happens to her. Then we have Kai…our commander and son of the leader. He’s got secrets. Big ones. And the amount of times my feelings for him flipped in this book is insane. I’m still honestly reeling… Acker, my man…he’s mysterious, yet he doesn’t pull his punches. He’s loyal to a fault. He feels things deeply and he is fervent in his beliefs and desires. I adore him and yet want to shake him for the way he goes about making decisions and only sharing half truths. And right now my heart is aching for him and also terrified of him. When I say I need book 2 like I need water, that’s an understatement. I don’t have space to discuss every side character, but just know that I love them deeply and they each have big personalities of their own. The miscommunication honestly feels more like a necessity and less of a trope. The MCs don’t truly know one another, so of course there’s hesitancy to share everything with a stranger who has been somewhat forced upon you due to the situation you’ve both found yourself in. But it also is refreshing to watch them both learn to trust and communicate more and more as they go. The world building was exciting and unique - unlike anything I’ve read before. The kingdoms and their systems and the unique magics all create this setting that is utterly perfect. I never felt confused, but could easily envision everything as it was explained in detail. The slow burn and spice was paced so perfectly and realistically that it never felt weird or forced or annoying. It unfolds the way most normal relationships would (minus the magic and fantasy aspects). I truly cheered for our MCs and loved the way they finally came together. This story takes all the tropes we know and love and twists them into something unique and entirely different than all the other stories we’ve grown used to. And when I tell you that you will NEVER see the plot twists coming, HOLY SMOKES BATMAN! And the last 2 chapters took me ALL THE WAY OUT. I’m not sure how I’m supposed to be okay after that. I almost want to go back to chapter 55 and pretend the rest didn’t happen…but of course I can’t do that and now I’ll just be dying a little inside every day until I get my hands on book two! If you enjoy fantasy or romantasy, this has to be your next read. All the rest can wait. Grab your copy YESTERDAY.
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Reviewed in the United States on June 24, 2025

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