SKU: 10659325647

DAHUA TPC-SD8421-T Thermal Network Hybrid Speed Dome

Sale price$45000.00 Regular price$50000.00
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Description

DAHUA TPC-SD8421-T Thermal Network Hybrid Speed DomeTPC SD8421 T > 400 300 uncooled VOx thermal sensor technology > Athermalized lens (thermal), focus free > 1 2. 8 2 megapixel progressive scan CMOS > Support detection and alarm of fire > Max 140 s pan speed, 360 endless pan rotation > Up to 300 presets, 5 auto scan, 8 tour, 5 pattern > 7 2 alarm in out > Micro SD memory, IP66 > Support temperature measurement Product Data Thermal Detector Type Vanadium oxide uncooled focal plane detector Effective

TPC-SD8421-T 

> 400 × 300 uncooled VOx thermal sensor technology
> Athermalized lens (thermal), focus-free
> 1/2.8” 2 megapixel progressive scan CMOS
> Support detection and alarm of fire
> Max 140°/s pan speed, 360° endless pan rotation
> Up to 300 presets, 5 auto scan, 8 tour, 5 pattern
> 7/2 alarm in/out
> Micro SD memory, IP66
> Support temperature measurement


Product Data

Thermal

Detector Type

Vanadium oxide uncooled focal plane detector

Effective Pixels

400 × 300

Pixel Pitch

17 μm

Spectral Range

8 μm–14 μm

Thermal Sensitivity (NETD)

≤40 mK

Focal Length

7.5 mm; 13 mm; 25 mm; 35 mm; 50 mm

Field of View

7.5 mm: horizontal: 53.7°, vertical: 39.7°

13 mm: horizontal: 30°, vertical: 22.6°

25 mm: horizontal: 15.5°, vertical: 11.6°

35 mm: horizontal: 11.1°, vertical: 8.3°

50 mm: horizontal: 7.8°, vertical: 5.8°

Aperture

F1.0

DRI Distance

Based on the

reference:

human

(1.8 m × 0.5 m)

vehicle

(4 m × 1.4 m)

Lens

Detection

Recognition

Identification

7.5 mm

Vehicle: 558 m (1830.71 ft)

Human:221m (725.07 ft)

Vehicle: 147m

(482.28 ft)

Human: 57 m

(187.01 ft)

Vehicle: 74 m

(242.78 ft)

Human: 28 m

(91.86 ft)

13 mm

Vehicle: 1020m

(3346.47 ft)

Human: 382 m (1253.28 ft)

Vehicle: 255 m (836.61 ft)

Human: 98 m

(321.52 ft)

Vehicle: 127m

(416.67 ft)

Human: 49 m

(160.76 ft)

25 mm

Vehicle: 1961 m (6433.73 ft)

Human: 735 m (2411.42 ft)

Vehicle: 490 m (1607.61 ft)

Human: 189 m (620.08 ft)

Vehicle: 245m

(803.81 ft)

Human: 95 m

(311.68 ft)

35 mm

Vehicle: 2745 m (9005.91 ft)

Human: 1029 m (3375.98 ft)

Vehicle: 686 m (2250.66 ft)

Human: 265 m (869.42 ft)

Vehicle: 343 m (1125.33 ft)

Human: 132 m (433.07 ft)

50 mm

Vehicle: 3922m (12867.45 ft)Human: 1471 m (4826.12 ft)

Vehicle: 980 m (3215.22 ft)

Human: 378 m (1240.76 ft)

Vehicle: 490 m (1607.61 ft)

Human: 189 m (620.08 ft)

Digital Detail Enhancement (DDE)

Yes

Thermal Image Stabilization

Electronic Image Stabilization

AGC

Auto; manual

Noise Reduction

2D NR; 3D NR

Image Flip

180°

Color Palettes

18 color modes selectable such as Whitehot/Blackhot/Ironrow/Icefire.

Temperature

Measurement Range

Low temperature mode:

-20°C (-4°F) to +150°C (302°F)

High temperature mode:

0°C (34°F) to +550°C (1022°F)

Temperature Accuracy

Max (±2°C, ±2%)

Operating temperature: -20°C (-4°F) to +60°C (140°F)

Temperature Mode

Spot: 12

Line: 12

Area: 12

Support 12 rules simultaneously

Visible

Image Sensor

1/2.8 inch CMOS

Max. Resolution

1920 × 1080

Horizontal Definition

≥1083TVL

Visible Effective Pixels

2MP

Min. Illumination

Color: 0.005 [email protected]

Black & white: (IR off) 0.00051 [email protected];

(IR on) 0 Lux

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

Visible Image Stabilization

Electronic Image Stabilization

Electronic Shutter Speed

1/30000 s–1 s

BLC

Yes

WDR

Yes

HLC

Yes

Digital Zoom

16 ×

Day/Night

Auto (ICR); color/B/W

Image Flip

180°

Exposure Compensation

Yes

Iris

Auto

Focus Mode

Auto; semi-auto; manual

Focal Length

3.95 mm–177.7 mm

Zoom Speed

About 4s

Field of View

Horizontal: 65.66°–1.88°;

Vertical: 29.4°–1.09°;

Diagonal: 73.1°–2.13°

DORI Distance

D: 2345 m (7694 ft);

O: 938 m (3077 ft);

R: 469 m (1539 ft);

I: 234 m (768 ft)

Close Focus Distance

1 m (39.37 inch)–10 m (393.7 inch)

Optical Zoom

45 ×

Aperture

F1.6–F4.95

Fill Light Type

IR light

IR On/Off control

Auto; manual

IR Distance

≥100 m

IR Field of View

45° for 2 IR lights, 15° for 2 IR lights

Audio and Video

Video Compression

H.265; H.264; H.264H; H.264B; MJPEG

Resolution

Thermal:

Main stream: SXGA (1280 × 1024)/960P (1280 × 960)/720P (1280 × 720)/400 × 300, 1280 × 960 by default

Sub stream: 640 × 512/640 × 480/400 × 300, 400 × 300 by default

Visual:

Main stream: 1080P (1920 × 1080)/720P (1280 × 720)/704 × 576, 1920 × 1080 by default

Sub stream: 704 × 576/352 × 288, 352 × 288 by default

Audio Compression

G.711a; G.711mu; PCM

Image Encoding Format

JPEG

PTZ

Pan/Tilt Range

Pan: 0°–360° endless; Tilt: -10°–+90°

Manual Control Speed

Pan: 0.1°–200°/s; Tilt: 0.1°–120°/s

Preset Speed

Pan: 240°/s; Tilt: 200°/s

Preset

300

Idle Motion

Activate Preset/Scan/Tour/Pattern if there is no command in the specified period

Timed Task

Preset/Scan/Tour/Pattern

Image Freeze

Yes

PTZ Mode

5 Auto Scan, 8 Tour, 5 Pattern, Auto Pan

Speed Setup

Human-oriented focal length/ speed adaptation

Power Up Action

Auto restore to previous PTZ and lens status after power failure

Idle Motion

Activate Preset/ Scan/ Tour/ Pattern if there is no command in the specified period

General Function

Network Protocol

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

Region of Interest (ROI)

Yes

Edge Storage

FTP; Micro SD card (256G, hot plug)

Interoperability

ONVIF; CGI; Dahua SDK

Browser

IE: IE8 and the later, and explorer with IE core

Google: 42 and the earlier

Firefox: 42 and the earlier

Safari: 10 and the earlier

User/Host

20 channels at most (the total bandwidth 64M)

Security

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

User Management

Support 20 users at most and users are classified as two groups-administrator group and user group.

Malfunction Detection

Network disconnection; IP addresses conflict; SD card error (status or storage space)

Professional and Intelligent

Advanced Intelligent Functions

Fire detection & alarm, Cold/Hot spot tracking, Human/Vehicle classification, Auto Tracking

IVS Analytics

Tripwire/intrusion

Object Filter

Yes

Object Tracking

Single-scenario; multi-scenario; panoramic; manual; alarm-linked

Analog Video Output

1 channel of CVBS output with BNC port

Port

Network

1 10M/100M Ethernet port (RJ-45)

Alarm Input

7 channels

Alarm Output

2 channels

Alarm Linkage

SD card recording/on-off output/siren and light/email/PTZ/snapshot

Alarm Event

Motion detection/privacy mask/audio detection/SD card abnormality/network abnormality/anti-burn warning

Audio Input

1 channel

Audio Output

1 channel

RS-485

1 channel

Power

Power Supply

24V/5A±15% AC

Power Consumption

Basic: <17W (heater off)

Maximum: <38W (heater on)

Environment

Operating Temperature

-40°C to +60°C (-40°F to +140°F)

Operating Humidity

≤95%

Storage Temperature

-50°C to +70°C (-58°F to +176°F)

Self-Adaptive

Auto heating to protect the chip under the cold environment

Physical Characteristics

Protection Grade

IP66, anti-surge 6KV, anti-elctrostatic 8KV (touched by objects), anti-elctrostatic 15KV (air)

Dimensions

Φ240 mm × 357 mm (Φ9.45" × 14.06")

Packaging Dimensions

319.0 mm × 319.0 mm × 521.0 mm (12.56" × 12.56" × 20.16")

Net Weight

≤8 kg (17.64 lb)

Gross Weight

≤10 kg (22.05 lb)

Power Adaptor

Contained

Lens

Contained

Certification

Certifications

CE; FCC

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 10659325647

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4.1 ★★★★★
Based on 14 reviews
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Product Reviews
J
Verified Purchase
James E Morris
Dallas, US
★★★★★ 5
Not expensive
Gets the job done
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
S
Verified Purchase
steven f
Grantham, US
★★★★★ 1
Initially defective poor quality
This item was initially defective and I needed one so I ordered another thinking it was a fluke. Both devices would not turn on. The second one briefly turned on for about 30 seconds and died. The major inconveniences that I can't return it in the normal way. I have to bring it to UPS and there isn't one near my house. I am very disappointed with this item and also with the return policy
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Reviewed in the United States on June 8, 2026
J
Verified Purchase
JudeBlack
Los Angeles, US
★★★★★ 5
Came in skeptical, but it's GREAT!
I read all the bad reviews I could on this thing and considered it an acceptable risk considering the price. Assembly was easy and the instructions were fair. Not amazing, but once you handle the edger, the gist is clear. I was skeptical overall that the horsepower and plastic guard weren't going to be enough. I ran it for nearly 45min stopping every 5 or so to check the blade and guard. It stayed tight and I was able to manually turn the blade to make sure it was working right. My front yard and sidewalk have been neglected for a few years. I would sometimes edge it out with the weed Wacker, but couldn't get it as clean as I wanted without breaking a LOT of line. When I was done, I noticed the guard had a lot of soil and grass buildup that I was able to take out easily with my fingers. There were a few times I scraped the sidewalk edge, but the blade is still solid and ready for more! I was surprised at the quality and as you're going over an area, it feels solid and not squirly or out of control. My uses are going to be mostly suburban maintenance on my own yard. If I had more land or something bigger, I would consider something larger. For my yard and purposes, this edger is going to work just fine! Did not notice any issues with the blade getting loose, but stayed aware of it. There is a lock nut that keeps it in place. I imagine over time and switching blades, this is going to lose its locking function, but I already see amazon has replacement blades that come with new lock nuts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2025
S
Verified Purchase
Sherid94
Bozeman, US
★★★★★ 5
Works great, easy assembly and no issues!
Using the weedeater for edging was too hard, so I purchased this. It works great! It was easy to assemble and easy to use. My lines are perfect, but the size, durability, and power of this gem get the job done, and it's lightweight enough that I can easily maneuver it around the yard. I chose a corded one so I don't have to deal with battery life or charging.
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Reviewed in the United States on September 26, 2025
N
Verified Purchase
Nancy Dobbs
Waukegan, US
★★★★★ 5
Easy to handle
Style: Lawn Edger w/(1) 4.0 Ah Battery
This is fantastic. It was a breeze to put together, the battery lasts a good 45 minutes or more, it is easy to handle, and does a terrific job of edging the concrete driveway. the roadside curb, and the borders of my flower beds. It is not too heavy and has loads of power. I am a 5'1" woman 81 years old and this tool is very easy for me to use and carry. The size is not too long even for me to maneuver. It is easy to lean if you get clumps of dirt in the housing for the blade and it is adjustable to suit the depth needed at the time. It seems very well made. The price was reasonable and I think we may be friends for quite a whole.
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Reviewed in the United States on July 29, 2025

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