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Description
Dahua 8MP 25x Starlight IR WizSense PTZ-camera (SD49825GB-HNR)Productbeschrijving De Dahua SD49825GB HNR is een 8 MP gemotoriseerde PTZ camera (Pan Tilt Zoom) die een geavanceerde bewakingsoplossing biedt voor buitenomgevingen. Dankzij de 25x optische zoom, Starlight technologie en infrarood met groot bereik (100 m) legt hij heldere beelden vast, zelfs bij weinig licht. Deze camera is voorzien van geavanceerde kunstmatige intelligentie (AI) en WizSense functies zoals gezichtsdetectie, perimeterbeveiliging en SMD
Productbeschrijving
De Dahua SD49825GB-HNR is een 8 MP gemotoriseerde PTZ-camera (Pan-Tilt-Zoom) die een geavanceerde bewakingsoplossing biedt voor buitenomgevingen. Dankzij de 25x optische zoom, Starlight-technologie en infrarood met groot bereik (100 m) legt hij heldere beelden vast, zelfs bij weinig licht.
Deze camera is voorzien van geavanceerde kunstmatige intelligentie (AI) en WizSense-functies zoals gezichtsdetectie, perimeterbeveiliging en SMD 4.0, waarmee het onderscheid tussen mensen, voertuigen en levenloze objecten wordt verbeterd.
Met zijn IP66-bescherming, 6000V-bliksembeveiliging en brede temperatuurbereik (-40 °C tot +65 °C) is hij ideaal voor buiteninstallaties onder extreme omstandigheden.
Specificaties
| Camera | |
| Beeldsensor | 1/2,8" CMOS |
| Pixel | 8 MP |
| Maximale resolutie | 3840 (H) × 2160 (V) |
| ROM | 4 GB |
| RAM | 1 GB |
| Elektronische sluitertijd | 1/1 s–1/30.000 s |
| Scansysteem | Progressief |
| Minimale verlichting | Kleur: 0,005 [email protected] Zwart-wit: 0,0005 [email protected] 0 [email protected] (IR-licht aan) |
| Verlichtingsafstand | 100 m (328,08 ft) (IR) |
| Aan/uit-regeling van de verlichting | Zoom Prio; Handmatig; Smart IR; Uit |
| Illuminator nummer | 4 (IR) |
| Lens | |
| Brandpuntsafstand | 5 mm–125 mm |
| Maximaal diafragma | F1.6–F3.6 |
| Gezichtsveld | H: 53,1°–3,4°; V: 30,4°–1,9°; D: 59,3°–3,9° |
| Optische zoom | 25× |
| Focusregeling | Automatisch; semi-automatisch; handmatig |
| Korte scherpstelafstand | 0,1 m–1,5 m (0,33 ft–4,92 ft) |
| Irisbestrijding | Automatisch; handmatig |
| PTZ | |
| Pan/Tilt-bereik | Pan: 0° tot 360° eindeloos Kantelen: –15° tot +90°, automatisch 180° omdraaien |
| Handmatige snelheidsregeling | Pan: 0,1°–200°/s Kantelen: 0,1°–120°/s |
| Vooraf ingestelde snelheid | Pan: 240°/s Kantelen: 200°/s |
| Vooraf ingesteld | 300 |
| Tour | 8 (tot 32 presets per tour) |
| Patroon | 5 |
| Scannen | 5 |
| Uitschakelgeheugen | Ja |
| Stationaire beweging | Patroon; Voorinstelling; Scan; Tour |
| PTZ-protocol | DH-SD Pelco-P/D (automatische herkenning) |
| Intelligentie | |
| IVS (Perimeterbeveiliging) | Struikeldraad; indringing; detectie van het passeren van een hek; detectie van rondhangen; achtergelaten/vermist object; snel bewegend; parkeerdetectie; mensen verzamelen; classificatie van voertuig-/mensalarmen |
| Gezichtsdetectie | Ondersteunt gezichtsdetectie, optimalisatie, tracking, het maken van foto's, het uploaden van hoogwaardige snapshots van gezichten en gezichtsverbetering; Ondersteunt het extraheren van kenmerken. 6 kenmerken en 8 gezichtsuitdrukkingen: geslacht, leeftijd, bril, gezichtsuitdrukkingen (boos, verdrietig, haatdragend, eng, verrast, kalm, blij en verward), masker, snor; Ondersteunt gezichtsuitsnijding: gezicht, foto van 2,5 cm. Vastlegstrategieën omvatten realtime vastleggen, optimalisatie en kwaliteit staat voorop. Ondersteunt maximaal 5 gezichtsdatabases; registreert personen één voor één of in batches; stelt gezichtsgelijkenis vast; vergelijkt gezichten met 10.000 gezichten. |
| SMD | SMD 4.0 |
| Auto Patrol | Wanneer een doelwit wordt gedetecteerd, wordt de IVS-regel geactiveerd en wordt de camera gekoppeld aan de PTZ. Vervolgens roteert de camera naar de positie van het doelwit en wordt er gepatrouilleerd op basis van de vooraf ingestelde waarden. |
| Video | |
| Videocompressie | H.264H; H.264B; Slimme H.265+; H.264; H.265; MJPEG (substream); Slimme H.264+ |
| Streaming-mogelijkheid | 3 streams |
| Resolution | 4K (3840×2160); 4M (2560×1440); 3M (2048×1536); 3M (2304×1296); 1080p (1920 × 1080); 720p (1280 × 720); D1 (704×576/704×480); VGA(640×480);CIF (352×288/352×240) |
| Videoframesnelheid | Hoofdstream: 4K/4M/1080p/1,3M/720p (1–25/30 fps) Substream 1: D1/VGA/CIF (1–25/30 fps) Substream 2: 1080p/1,3M/720p/CIF (1–25/30 fps) |
| Bitsnelheidsregeling | CBR/VBR |
| Videobitsnelheid | H.264: 3.328 kbps–8.192 kbps H.265: 1.280 kbps–8.192 kbps |
| Dag/Nacht | Auto (ICR)/Kleur/Z/W |
| BLC | Ja |
| WDR | DWDR |
| HLC | Ja |
| Witbalans | Auto; binnen; buiten; ATW; handmatig; natriumlamp; natuurlijk licht; straatlantaarn |
| Krijg controle | Automatisch; handmatig |
| Ruisonderdrukking | 2D-ruisonderdrukking; 3D-ruisonderdrukking |
| Bewegingsdetectie | Ja |
| Regio van interesse (RoI) | Ja |
| Ontwasemen | Elektronisch |
| Digitale zoom | 16× |
| Beeldrotatie | 180° |
| Privacymaskering | Er kunnen maximaal 24 gebieden worden ingesteld, met maximaal 8 gebieden in dezelfde weergave |
| S/N-verhouding | ≥ 55 dB |
| Audio | |
| Audiocompressie | PCM; G.711a; G.711Mu; G.726; MPEG2-Layer2; G722.1; G729; G723 |
| Netwerk | |
| Netwerkpoort | 1 × RJ-45 (10/100 Base-T) |
| Netwerkprotocol | FTP; RTMP; IPv6; Bonjour; IPv4; DNS; RTCP; PPPoE; NTP; RTP; 802.1x; HTTPS; SNMP; TCP/IP; DDNS; UPnP; NFS; ICMP; UDP; IGMP; HTTP; SSL; DHCP; SMTP; Qos; RTSP; ARP |
| Interoperabiliteit | RTMP; CGI; SDK; ONVIF (Profiel S&G&T); P2P |
| Streamingmethode | Unicast/Multicast |
| Gebruiker/Host | 20 (totale bandbreedte: 64 M) |
| Opslag | Micro SD-kaart (512 GB); FTP/SFTP; NAS |
| Browser | IE 9 en latere versies Chrome 41 en latere versies Firefox 50 en latere versies iOS 10 en latere versies |
| Beheersoftware | DSS Pro; DMSS |
| Mobiele client | iOS; Android |
| Certificering | |
| Certificeringen | CE-EMC: EN 55032; EN 61000-3-3; EN 61000-3-2; EN 50130-4; EN 55035 CE-LVD: EN 62368-1 FCC: 47 CFR FCC Deel 15, Onderdeel B, NSI C63.4 UL: UL62368-1 |
| Port | |
| Audio-ingang | 1 kanaal |
| Audio-uitvoer | 1 kanaal |
| Alarmkoppeling | Vastleggen; opnemen; e-mail verzenden; vooraf instellen; tour; patroon; alarm digitale ingang |
| Alarmgebeurtenis | Bewegings-/manipulatiedetectie; audiodetectie; detectie van verbroken netwerkverbinding; IP-conflictdetectie; detectie van de status van de geheugenkaart; detectie van geheugenruimte |
| Alarm-I/O | 2/1 |
| Audio-I/O | 1/1 |
| Stroom | |
| Voeding | 12 VDC/3A ±10% PoE (802.3at) |
| Stroomverbruik | Basis: 9,8 W Max.: 20 W (Illuminator + alarm + PTZ) |
| Omgeving | |
| Bedrijfstemperatuur | –40 °C tot +70 °C (–40 °F tot +158 °F) |
| Bedrijfsvochtigheid | ≤ 95% |
| Opslagtemperatuur | –40 °C tot +70 °C (–40 °F tot +158 °F) |
| Opslagvochtigheid | ≤ 95% |
| Bescherming | IP66, TVS 6000 V bliksembeveiliging; overspanningsbeveiliging; bescherming tegen spanningsstoten |
| Structuur | |
| Productafmetingen | 270,4 mm × Φ160 mm (10,65" × Φ6,30") |
| Nettogewicht | 2,4 kg (5,29 lb) |
| Brutogewicht | 3,9 kg (8,60 lb) |
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4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Academic / Thought-Provoking
Format: Paperback
They Were Her Property: White Women as Slave Owners in the American South is a powerful, eye-opening work that challenges long-held assumptions about slavery and gender in American history. Stephanie E. Jones-Rogers thoroughly dismantles the myth that white women were passive or marginal participants in the institution of slavery. Through meticulous research and extensive use of primary sources, including legal records, letters, and testimonies from formerly enslaved people—the book reveals that many white women were active, knowledgeable, and often brutal slave owners in their own right.
What makes this book especially compelling is how it centers the voices and experiences of enslaved people to expose the economic, legal, and physical power white women wielded. Jones-Rogers shows that white women not only benefited from slavery but also enforced it, defended it, and used it to build wealth and social status. The writing is clear, authoritative, and accessible, making complex historical arguments understandable without oversimplifying them.
This book is an essential read for anyone studying American history, slavery, race, or gender. It forces readers to confront uncomfortable truths and rethink narratives that have long softened or excused the role of white women in slavery. They Were Her Property is both academically rigorous and deeply impactful—a necessary contribution to honest historical understanding.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
★★★★★ 5
Remarkable analysis of slaveholding women in Antebellum America
Format: Paperback
Stephanie Jones-Rogers has provided us with a book that looks at the South's "peculiar institution" through a very different lens - the slaveholders/slaveowners, but this analysis looks at women that owned slaves, thus opening up a new avenue of study that I hadn't previously seen.
Jones-Rogers offers a well written account that is rich in historical details. She demonstrates through vivid historical evidence that the women that owned enslaved people were primarily driven by economic motives, and that these women were just as demanding and could be just as harsh as the "typical" slaveowner image that has been crafted over the years.
The book is organized thematically, and each chapter demonstrates the economic motivation behind slave ownership. The reader is offered views of everything from young children becoming slave owners when their parents "gifted" them an enslaved person, and how these young girls were taught that this was "property" that could be used as desired to how these female slaveholders would sell their slaves to meet their economic goals.
All told, this is a fascinating book that uncovers a long ignored slice of Antebellum American history that makes the historiographical literature of pre-Civil War history much richer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2021
★★★★★ 5
Poignant, truthful look at women as powerful, business-savvy, yet brutal slave owners
Format: Paperback
Women slave owners were the norm in the South, not the exception. They increased in numbers, stature, and power while the men were off fighting the Civil War. Women often owned the slaves, not the men and knew how to sign prenuptial agreements back then to insure they kept all their property (including slaves) upon divorce or death of their spouse. They traded and bought and sold slaves with business savvy that most men envied. And they could be just as brutal towards their slaves. Ironically, it was the ownership of other people that empowered these women to not be bound to their husbands.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 26, 2025
★★★★★ 4
Good history, but not fun, engaging in popular literature.
Format: Paperback
The author is a very competent historian, and proves her points. She does so by stating each thesis and then reciting an exceedingly long string of supporting examples. Rinse and repeat. This is high quality, academic style history, but it’s not very engaging as popular literature. No one’s going to say “I couldn’t put it down.” That being said - I liked it! I learned a lot. Thanks.
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Reviewed in the United States on March 1, 2023
★★★★★ 5
Should be required
Format: Paperback
In my opinion, this book should be required reading in high school/college history classes. It’s so important to learn accurate history when it comes to slavery and this book does that. White women played a larger role than we are taught. Please give this a read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025