SKU: 58527416652

DAHUA TPC-PT8441D Thermal Network Multi-spectral Pan Tilt Camera

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Description

DAHUA TPC-PT8441D Thermal Network Multi-spectral Pan Tilt CameraTPC PT8441D Thermal Network Multi spectral Pan & Tilt Camera > Vanadium oxide uncooled focal plane detector. > 4 Megapixel progressive scan CMOS. > Visible lens offers 56 optical zoom. > AI functions: heat detection, smoke detection, tripwire, intrusion, boat detection, and human vehicle classification. > Pan: 0 to 360 endless, tilt: 45 to +90. > Optical defog and Optical Image Stabilization (OIS). > Auto rain sensing wiper. > Wide input voltage 2457

TPC-PT8441D

Thermal Network Multi-spectral Pan & Tilt Camera

> Vanadium oxide uncooled focal plane detector.

> 4 Megapixel progressive scan CMOS.

> Visible lens offers 56× optical zoom.

> AI functions: heat detection, smoke detection, tripwire, intrusion, boat detection, and human/vehicle classification.

> Pan: 0° to 360° endless, tilt: –45° to +90°.

> Optical defog and Optical Image Stabilization (OIS).

> Auto rain-sensing wiper.

> Wide input voltage 24–57 VDC.

> IP66 rated.
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General

Appearance

Thermal Network Multi-spectral Pan & Tilt Camera

Type

Security

Thermal

Detector Type

Vanadium oxide uncooled focal plane detector

Effective Pixels

400 (H) × 300 (V)

Pixel Pitch

17 μm

Spectral Range

8 μm–14 μm

Sensitivity (NETD)

≤35 mK

Focal Length

50 mm; 75 mm; 100 mm

Field of View

50 mm: H: 7.8°; V: 5.8°

75 mm: H: 5.2°; V: 3.9°

100 mm: H: 3.9°; V: 2.9°

Focus Control

Auto; Manual

Aperture

50 mm: F1.0

75 mm: F1.0

100 mm: F1.1

Detection Distance

50 mm: Vehicle: 4,525 m (14,845.8 ft)

Human: 1,471 m (4,826.12 ft)

75 mm: Vehicle: 6,787 m (22,267.06 ft)

Human: 2,206 m (7,237.53 ft)

100 mm: Vehicle: 9,050 m (29,691.6 ft)

Human: 2,941 m (9,648.95 ft)

Recognition Distance

50 mm: Vehicle: 1,110 m (3,641.73 ft)

Human: 378 m (1,240.16 ft)

75 mm: Vehicle: 1,665 m (5,462.6 ft)

Human: 567 m (1,860.24 ft)

100 mm: Vehicle: 2,220 m (7,283.46 ft)

Human: 756 m (2,480.31 ft)

Identification Distance

50 mm: Vehicle: 560 m (1,837.27 ft)

Human: 189 m (620.08 ft)

75 mm: Vehicle: 840 m (2,755.91 ft)

Human: 284 m (931.76 ft)

100 mm: Vehicle: 1,120 m (3,674.54 ft)

Human: 378 m (1,240.16 ft)

Note:

①Detection Distance: Detects objects, but cannot recognize their characteristics (objects must cover more than 3.6 pixels of the image).

②Recognition Distance: Classifies objects into general categories, such as human, vehicle (the object must cover more than 14 pixels of the image).

③Identification Distance: Classifies objects into specific categories based on their characteristics, such as engineering truck, car (the object must cover more than 28 pixels of the image).

Digital Detail Enhancement (DDE)

Yes

Image Stabilization

Electronic Image Stabilization (EIS)

Digital Zoom

19 levels

AGC

Auto; Manual

Noise Reduction

2D NR; 3D NR

Image Flip

180°

Color Palettes

18 (white hot; black hot; fusion; rainbow; globow; ironbow1; ironbow2; sepia; color1; color2; icefire; rain; red hot; green hot; spring; summer; autumn; winter)

Visible

Image Sensor

1/1.8" CMOS

Max. Resolution

2688 (H) × 1520 (V)

Pixel

4 MP

Min. Illumination

Color: 0.005 lux

Black & white: 0.0005 lux

0 lux (IR on)

AGC

Auto; Manual

Noise Reduction

2D NR; 3D NR

S/N Ratio

>55 dB

White Balance

Auto; manual; indoor; outdoor; tracking; sodium lamp; street lamp; natural

Defog

Optical defog

Image Stabilization

Optical Image Stabilization

Electronic Shutter Speed

1 s–1/30,000 s (auto/manual)

BLC

Yes

WDR

Yes

HLC

Yes

Digital Zoom

Yes

Day/Night

Auto (ICR); Color; B/W

Image Flip

180°

Exposure Compensation

Yes

Focus Control

Auto; semi-auto; manual

Focal Length

6 mm–336 mm

Zoom Speed

<8.8 s

Field of View

H: 64.4°–1.28°

V: 38.37°–0.72°

Close Focus Distance

0.1 m–5 m (0.33 ft–16.4 ft)

Optical Zoom

56×

Aperture

F1.5–F5.3

IR Illumination Distance

150 m (492.13 ft)

IR Illuminator On/Off Control

Auto; Manual

Audio and Video

Video Compression

H.265; H.264H; H.264

Resolution

Thermal:

Main stream: 1280 × 1024; 1280 × 960; 1280 × 720; 400 × 300; 1280 × 960 (default)

Sub stream: 640 × 512; 640 × 480; 400 × 300; 400 × 300 (default)

Visible:

Main stream: 2688 × 1520; 1920 × 1080; 1280 × 720; 704 × 576; 2688 × 1520 (default)

Sub stream: 704 × 576; 352 × 288; 352 × 288 (default)

Video Frame Rate

Thermal (50 Hz):

Main stream: 1 fps–50 fps, 50 fps by default

Sub stream: 1 fps–25 fps, 15 fps by default

Visible (50 Hz):

Main stream: 1 fps–25 fps, 25 fps by default

Sub stream: 1 fps–25 fps, 15 fps by default

Thermal (60 Hz):

Main stream: 1 fps–60 fps, 60 fps by default

Sub stream: 1 fps–30 fps, 15 fps by default

Visible (60 Hz):

Main stream: 1 fps–30 fps, 30 fps by default

Sub stream: 1 fps–30 fps, 15 fps by default

Audio Encoding

G.711a; G.711mu; PCM

Image Encoding Format

JPEG

PTZ

Pan/Tilt Range

Pan: 0° to 360° endless

Tilt: –45° to +90°

Manual Control Speed

Pan: 0.1°/s–140°/s

Tilt: 0.1°/s–50°/s

Preset Speed

Pan: 0.1°/s–140°/s

Tilt: 0.1°/s–50°/s

Preset

300

Tour

8 (up to 32 presets per tour)

Pattern

5

Scan

5

Power-off Memory

Yes

Privacy Masking

4 blocks

Idle Motion

Preset; auto pattern; auto tour; pan; progressive scan

Timing Task

Preset; auto pattern; auto tour; pan; progressive scan

Position Display

ON/OFF

Preset Video Freeze

Yes

Telephoto Speed Limit

Yes

Positioning Accuracy

± 0.1°

Wiper

Manual/Auto. Supports setting wiper running times, frequency, and period

3D Positioning

Yes

Laser Illumination (Optional)

Laser Illumination Consumption

4.2 ± 0.4 W

Laser Illumination Wavelength

850 ± 10 nm

Laser Illumination Distance

≥800 m (2,624.67 ft)

Angle of Laser Illuminator

2° to 70° adjustable

Laser Zoom Speed

<5 s

Brightness Setting for Laser Illumination

Auto; Manual

Function

Two-way Audio

Yes

Network Protocol

HTTP; HTTPS; TCP; ARP; RTSP; RTP; UDP; RTCP; SMTP; FTP; DHCP; DNS; DDNS; PPPOE; IPv4/v6; SNMP; QoS; UPnP; NTP; Multicast; SFTP; 802.1x

Region of Interest (RoI)

Yes (customizable)

Storage

FTP; Micro SD card (optional)

Interoperability

ONVIF; CGI; DaHuaSDK

Browser

IE: IE8 and later (includs the browsers with IE kernel, such as 360 Explorer, Sougou Explorer)

Chrome: 42 and earlier

Firefox: 42 and earlier

User/Host

Up to 12 (total bandwidth: 64 MB)

Security

Authorized username and password; attached MAC address; encrypted HTTPS; IEEE 802.1x; controlled network access

User Management

Up to 20 users; supports multi-level user permissions (2 levels): management group and user group

Malfunction Detection

Network disconnection detection; IP conflict detection; memory card state detection; memory space detection

PIP

Yes

Intelligence

Heat Detection

Yes. Marks the detected anomaly.

Cold/Hot Spot Trace

Yes

Perimeter Protection

Yes. Supports tripwire and intrusion.

Target Distinction

Human/Vehicle Classification

Target Filtering

Yes

Target Tracking

Yes

Smoke Detection

Yes

Boat Detection

Yes

Port

Analog Output

1 × CVBS output; BNC port

Network Port

1 × RJ-45 (10/100 Base-T)

Alarm Input

7

Alarm Output

2

Alarm Event

No SD card; low SD card space; SD card error; network disconnection; IP conflict; motion detection; video tampering; intrusion; tripwire; audio detection; defocus on thermal channel

Audio Input

1

Audio Output

1

RS-485

1

Power

Power Supply

Wide input voltage 24–57 VDC

Power Consumption

IR 150 m

Basic: 39 W (IR off, heater off)

Max: 69 W (IR on, heater off);

92 W (IR on, heater on)

Laser 800 m

Basic: 39 W (illuminator off, heater off)

Max: 66 W (illuminator on, heater off);

89 W (illuminator on, heater on)

Environment

Operating Temperature

–40 °C to +70 °C (–40 °F to +158 °F)

Operating Humidity

≤95%

Storage Temperature

–40 °C to +70 °C (–40 °F to +158 °F)

Physical Characteristics

Protection

IP66

Reliability

Surge protection: 6 kV

Air discharge: 15 kV

Contact discharge: 8 kV

Product Dimensions

520 mm × 266 mm × 427 mm (20.47" × 10.47" × 16.81") (L × W × H)

Packaging Dimensions

722 mm × 675 mm × 443 mm (28.43" × 26.57" × 17.44") (L × W × H)

Net Weight

≤22 kg (48.50 lb)

Gross Weight

≤25 kg (55.12 lb)

Installation

Desk mount

Power Adapter

Included

Lens

Included

PTZ Outlet

Side

Certification

Certifications

CE; FCC

Heat Detection Distance

Focal Length

Max. Distance

50 mm

3,000 m (9,842.52 ft)

75 mm

4,500 m (14,763.78 ft)

100 mm

6,000 m (19,685.04 ft)

Note:

The table displays the measured distances obtained from using the target size 2 m × 2 m for testing in an environment where the temperature is 23 °C and the relative humidity is below 60%.

The table is for reference only. The distances within it are subject to actual conditions including atmospheric conditions, target size, the installation site, and more.

Perimeter Protection Distance

Focal Length

Distance (Human)

Distance (Vehicle)

50 mm

350 m (1,148.29 ft)

1,050 m (3,444.88 ft)

75 mm

525 m (1,722.44 ft)

1,575 m (5,167.32 ft)

100 mm

700 m (2,296.59 ft)

2,100 m (6,889.76 ft)

Note:

The table displays the measured distances obtained from using the target sizes

1.8 m × 0.5 m (human) and 1.4 m × 4 m (vehicle) for testing in an environment where the temperature is 23 °C and the relative humidity is below 60%.

The table is for reference only. The distances within it are subject to actual conditions including atmospheric conditions, target size, the installation site, and more.

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4.8 ★★★★★
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Jennifer Sivak
Battle Creek, US
★★★★★ 4
Creepy, unpredictable and an all-around great read!
Format: Kindle
The power of our choices has never been more evident than in this novel. This book is filled with both good, and bad, decisions that lead to terrifying consequences. Right from the start, our protagonist, Eve, has to make a choice — should she let the family who showed up at her front door inside her home or send them back into the cold? Inevitably, Eve’s inability to say no and need to please others outweighs Stranger Danger and soon the family of five is wandering through the isolated Victorian house. The book warns early on, “Once you let them in, they’ll never leave.” For sure once she let them in, things were never the same. The visit seems innocuous enough until things start to change. Subtle changes, the kind that makes you second guess yourself, slowly emerge and, as time goes on, transform into the kind that makes you question reality. Eve, too, transforms throughout the book. Her character bounces through bouts of paranoia, insecurity, impulsiveness and courage, never fully landing on one attribute, although paranoia always seems to be lurking in the depths of her mind. She constantly questions her own perceptions of what is and what was and the intentions of even the most innocent interactions. The book goes beyond the fear of what goes bump in the night and harnesses the fear of the unknown, keeping us on the edge of our seats. Nothing is as it seems. And it is scary! Kliewer’s frightening images and heart stopping encounters stay with you long after you’ve closed the book. At times, I found myself gripping my Kindle tightly and reading at lightning speed as if I, too, am escaping the sinister situations Eve faces. All in all, this is a good read. It’s quick and easy and Kliewer sets the stage with plenty of backstory, foreshadowing, suffocating tension, and creepy moments that all manage to tie into the moment a strange family shows up at her door. However, upon finishing, I found myself left with several unanswered questions (the only reason it got 4 and not 5 stars), which can be uncomfortable for readers who need everything wrapped up on a nice neat bow. But if you can handle a little ambiguity, take the time to read this book. Trust me, it's worth your time. And it may leave you questioning if things really are as they seem or have you hesitating before taking that trek down to the basement. For me, I may reconsider answering the door should a family of five come knocking.
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Reviewed in the United States on July 15, 2024
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ohtiki
Natrona Heights, US
★★★★★ 5
Definitely a page turner!
Format: Kindle
I really enjoyed this book! I was looking for a good, spooky book and this delivered. I went through all the emotions with this book; frustrated, sad, scared, confused...there was so much happening!! It was easy to get through this book because I wanted to know what was going to happen next. Although I loved this book, I had a lot of questions at the end, but the author could definitely write a couple more books getting deeper into the different stories introduced. I don't want to say TOO much because I don't want to give anything away, but after I finished I was like, "Nooooo!!!" LOL So, give it a read.
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Reviewed in the United States on May 7, 2026
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Verified Purchase
Bob Lewis
Bozeman, US
★★★★★ 3
A great read that leaves some loose threads
Format: Hardcover
I knew next to nothing about this book going into it other than that it was a horror novel and that my book club selected it. That’s neither a point in favor of or against the book itself, but it does become relevant in a moment because my lack of background shaped how I approached it to a certain extent. But before we get to that, the basic premise here is that this young couple has moved into a new house. One day while only one of them is home, there’s a knock at the door. This family is there and they say they used to live in the house and want to look around. In the real world, most of us would find that a slightly awkward situation but not an entirely unheard of one. In a horror novel, you know it’s going to set things in motion that probably won’t end well for at least someone involved, and that is indeed the case. But, contrary to immediate expectations, this doesn’t shift into a home invasion story. Instead, it treats us to a bit of slow burn horror as this visiting family seem slightly “wrong” for reasons neither the reader nor characters can put their fingers on, and things ultimately lead in rather unexpected directions, though I won’t spoil too much there. One of the interesting things I noticed quickly is that little interlude chapters throughout the book were punctuated with bits of Morse Code, which I dutifully translated as I read and which slowly began to hint at more of what was going on behind the scenes. That was a nice touch, I thought, but the novel eventually ran even further with that idea, treating us to more substantial codes and ciphers that became increasingly difficult to decrypt or translate. Some eventually became so frustrating that I took to the Internet for aid, whereupon I discovered that to solve some of them, you actually need clues from an alternate reality game which coincided with the book’s publication, but which the novel itself never directly alluded to, so that felt like a bit of a cheat to me, though I was eventually able to gather the information needed to solve the puzzles. Ultimately, I did not find those solutions necessary to understanding or enjoying the book, so it’s not too big a deal. The book itself was engrossing and exciting throughout but left the reader feeling like we’d only just gotten the tiniest taste of a much larger mythology, and I found myself wanting quite a bit more by the end of it, and I mean that in both a good way and a bad way. It’s good because it means I found the book so good I wanted more, but it’s bad because I found the ending left far too many loose threads for my own taste. But if you like a book ambitious enough to risk feeling a bit convoluted and yet with a clear sense that the author always knew exactly what he was doing, I think you’ll like this one. Though it’s far from AS complex, I think it will appeal strongly to fans of House of Leaves. Both thematically and in terms of structure, I noticed certain parallels between those works.
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Reviewed in the United States on November 7, 2025
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Verified Purchase
Tami B
Lexington, US
★★★★★ 4
Give it a Go
Format: Hardcover
I was captivated by the storyline from the very beginning. I had read numerous glowing reviews about this book, so I eagerly delved into it, eager to be swept away by the thrilling mystery that lay ahead. While there were a few instances where the chapters felt unnecessarily lengthy, the book was generally exhilarating and suspenseful. Of course, there were some predictable elements, but where's the fun in predicting everything? Overall, I enjoyed the twists and turns of this novel. However, the ending fell short of my expectations (which is a "me" problem). There were a few unanswered questions (perhaps by design), and the ending—well, let's say I wasn't a fan. Nevertheless, the Moris code and the puzzle within one of the DOCs were delightful touches that added depth to the novel.
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Reviewed in the United States on October 5, 2025
M
Verified Purchase
Megan McKernan
Omaha, US
★★★★★ 5
Confusing in the Best Way—A Chilling, Unforgettable Read
Format: Hardcover
This book completely pulled me in. It’s suspenseful, surreal, and genuinely unsettling in a way that lingers long after you put it down. The story keeps you slightly off-balance the entire time—you’re not quite sure what’s real, what’s not, or where it’s all going… but that’s what makes it so gripping. There were moments where I felt confused, but not in a bad way—it adds to the eerie atmosphere and makes the payoff even more impactful. It’s one of those books that keeps you thinking, piecing things together, and feeling just a little disturbed the whole way through. If you like psychological thrillers that are tense, strange, and a little terrifying, this one absolutely delivers. 5/5—haunting, gripping, and worth the ride.
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Reviewed in the United States on April 14, 2026

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